<< Chapter < Page Chapter >> Page >

Simplify: ( 2 x 4 ) 5 ( 4 x 3 ) 2 ( x 3 ) 5 .

2 x

Got questions? Get instant answers now!

Divide monomials

You have now been introduced to all the properties of exponents and used them to simplify expressions. Next, you’ll see how to use these properties to divide monomials. Later, you’ll use them to divide polynomials.

Find the quotient: 56 x 7 ÷ 8 x 3 .

Solution

56 x 7 ÷ 8 x 3 Rewrite as a fraction. 56 x 7 8 x 3 Use fraction multiplication. 56 8 x 7 x 3 Simplify and use the Quotient Property. 7 x 4

Got questions? Get instant answers now!
Got questions? Get instant answers now!

Find the quotient: 42 y 9 ÷ 6 y 3 .

7 y 6

Got questions? Get instant answers now!

Find the quotient: 48 z 8 ÷ 8 z 2 .

6 z 6

Got questions? Get instant answers now!

Find the quotient: 45 a 2 b 3 −5 a b 5 .

Solution

When we divide monomials with more than one variable, we write one fraction for each variable.

45 a 2 b 3 −5 a b 5 Use fraction multiplication. 45 −5 · a 2 a · b 3 b 5 Simplify and use the Quotient Property. −9 · a · 1 b 2 Multiply. 9 a b 2

Got questions? Get instant answers now!
Got questions? Get instant answers now!

Find the quotient: −72 a 7 b 3 8 a 12 b 4 .

9 a 5 b

Got questions? Get instant answers now!

Find the quotient: −63 c 8 d 3 7 c 12 d 2 .

−9 d c 4

Got questions? Get instant answers now!

Find the quotient: 24 a 5 b 3 48 a b 4 .

Solution

24 a 5 b 3 48 a b 4 Use fraction multiplication. 24 48 · a 5 a · b 3 b 4 Simplify and use the Quotient Property. 1 2 · a 4 · 1 b Multiply. a 4 2 b

Got questions? Get instant answers now!
Got questions? Get instant answers now!

Find the quotient: 16 a 7 b 6 24 a b 8 .

2 a 6 3 b 2

Got questions? Get instant answers now!

Find the quotient: 27 p 4 q 7 −45 p 12 q .

3 q 6 5 p 8

Got questions? Get instant answers now!

Once you become familiar with the process and have practiced it step by step several times, you may be able to simplify a fraction in one step.

Find the quotient: 14 x 7 y 12 21 x 11 y 6 .

Solution

Be very careful to simplify 14 21 by dividing out a common factor, and to simplify the variables by subtracting their exponents.

14 x 7 y 12 21 x 11 y 6 Simplify and use the Quotient Property. 2 y 6 3 x 4

Got questions? Get instant answers now!
Got questions? Get instant answers now!

Find the quotient: 28 x 5 y 14 49 x 9 y 12 .

4 y 2 7 x 4

Got questions? Get instant answers now!

Find the quotient: 30 m 5 n 11 48 m 10 n 14 .

5 8 m 5 n 3

Got questions? Get instant answers now!

In all examples so far, there was no work to do in the numerator or denominator before simplifying the fraction. In the next example, we’ll first find the product of two monomials in the numerator before we simplify the fraction. This follows the order of operations. Remember, a fraction bar is a grouping symbol.

Find the quotient: ( 6 x 2 y 3 ) ( 5 x 3 y 2 ) ( 3 x 4 y 5 ) .

Solution

( 6 x 2 y 3 ) ( 5 x 3 y 2 ) ( 3 x 4 y 5 ) Simplify the numerator. 30 x 5 y 5 3 x 4 y 5 Simplify. 10 x

Got questions? Get instant answers now!
Got questions? Get instant answers now!

Find the quotient: ( 6 a 4 b 5 ) ( 4 a 2 b 5 ) 12 a 5 b 8 .

2 a b 2

Got questions? Get instant answers now!

Find the quotient: ( −12 x 6 y 9 ) ( −4 x 5 y 8 ) −12 x 10 y 12 .

−4 x y 5

Got questions? Get instant answers now!

Access these online resources for additional instruction and practice with dividing monomials:

Key concepts

  • Quotient Property for Exponents:
    • If a is a real number, a 0 , and m , n are whole numbers, then:
      a m a n = a m n , m > n and a m a n = 1 a m n , n > m
  • Zero Exponent
    • If a is a non-zero number, then a 0 = 1 .

  • Quotient to a Power Property for Exponents :
    • If a and b are real numbers, b 0 , and m is a counting number, then:
      ( a b ) m = a m b m
    • To raise a fraction to a power, raise the numerator and denominator to that power.

  • Summary of Exponent Properties
    • If a , b are real numbers and m , n are whole numbers, then
      Product Property a m · a n = a m + n Power Property ( a m ) n = a m · n Product to a Power ( a b ) m = a m b m Quotient Property a m b m = a m n , a 0 , m > n a m a n = 1 a n m , a 0 , n > m Zero Exponent Definition a o = 1 , a 0 Quotient to a Power Property ( a b ) m = a m b m , b 0

Practice makes perfect

Simplify Expressions Using the Quotient Property for Exponents

In the following exercises, simplify.

x 18 x 3 5 12 5 3

Got questions? Get instant answers now!

y 20 y 10 7 16 7 2

y 10 7 14

Got questions? Get instant answers now!

p 21 p 7 4 16 4 4

Got questions? Get instant answers now!

u 24 u 3 9 15 9 5

u 21 9 10

Got questions? Get instant answers now!

q 18 q 36 10 2 10 3

Got questions? Get instant answers now!

t 10 t 40 8 3 8 5

1 t 30 1 64

Got questions? Get instant answers now!

x x 7 10 10 3

1 x 6 1 100

Got questions? Get instant answers now!

Simplify Expressions with Zero Exponents

In the following exercises, simplify.


13 0
k 0

1 1

Got questions? Get instant answers now!


27 0
( 27 0 )

Got questions? Get instant answers now!


15 0
( 15 0 )

−1 −1

Got questions? Get instant answers now!


( 25 x ) 0
25 x 0

Got questions? Get instant answers now!


( 6 y ) 0
6 y 0

1 6

Got questions? Get instant answers now!


( 12 x ) 0
( −56 p 4 q 3 ) 0

Got questions? Get instant answers now!


7 y 0 ( 17 y ) 0
( −93 c 7 d 15 ) 0

7 1

Got questions? Get instant answers now!


12 n 0 18 m 0
( 12 n ) 0 ( 18 m ) 0

Got questions? Get instant answers now!


15 r 0 22 s 0
( 15 r ) 0 ( 22 s ) 0

−7 0

Got questions? Get instant answers now!

Simplify Expressions Using the Quotient to a Power Property

In the following exercises, simplify.

( 3 4 ) 3 ( p 2 ) 5 ( x y ) 6

Got questions? Get instant answers now!

( 2 5 ) 2 ( x 3 ) 4 ( a b ) 5

4 25 x 4 81 a 5 b 5

Got questions? Get instant answers now!

( a 3 b ) 4 ( 5 4 m ) 2

Got questions? Get instant answers now!

( x 2 y ) 3 ( 10 3 q ) 4

x 3 8 y 3 10,000 81 q 4

Got questions? Get instant answers now!

Simplify Expressions by Applying Several Properties

In the following exercises, simplify.

( y 4 z 10 ) 5

y 20 z 50

Got questions? Get instant answers now!

( 3 m 5 5 n ) 3

27 m 15 125 n 3

Got questions? Get instant answers now!

( 5 u 7 2 v 3 ) 4

625 u 28 16 v 12

Got questions? Get instant answers now!

( t 2 ) 5 ( t 4 ) 2 ( t 3 ) 7

Got questions? Get instant answers now!

( q 3 ) 6 ( q 2 ) 3 ( q 4 ) 8

1 q 8

Got questions? Get instant answers now!

( −2 p 2 ) 4 ( 3 p 4 ) 2 ( −6 p 3 ) 2

Got questions? Get instant answers now!

( −2 k 3 ) 2 ( 6 k 2 ) 4 ( 9 k 4 ) 2

64 k 6

Got questions? Get instant answers now!

( −4 m 3 ) 2 ( 5 m 4 ) 3 ( −10 m 6 ) 3

Got questions? Get instant answers now!

( −10 n 2 ) 3 ( 4 n 5 ) 2 ( 2 n 8 ) 2

−4,000

Got questions? Get instant answers now!

Divide Monomials

In the following exercises, divide the monomials.

−72 u 12 ÷ 1 2 u 4

−6 u 8

Got questions? Get instant answers now!

45 a 6 b 8 −15 a 10 b 2

Got questions? Get instant answers now!

54 x 9 y 3 −18 x 6 y 15

3 x 3 y 12

Got questions? Get instant answers now!

20 m 8 n 4 30 m 5 n 9

−2 m 3 3 n 5

Got questions? Get instant answers now!

18 a 4 b 8 −27 a 9 b 5

Got questions? Get instant answers now!

45 x 5 y 9 −60 x 8 y 6

−3 y 3 4 x 3

Got questions? Get instant answers now!

64 q 11 r 9 s 3 48 q 6 r 8 s 5

Got questions? Get instant answers now!

65 a 10 b 8 c 5 42 a 7 b 6 c 8

65 a 3 b 2 42 c 3

Got questions? Get instant answers now!

( 10 m 5 n 4 ) ( 5 m 3 n 6 ) 25 m 7 n 5

Got questions? Get instant answers now!

( −18 p 4 q 7 ) ( −6 p 3 q 8 ) −36 p 12 q 10

−3 q 5 p 5

Got questions? Get instant answers now!

( 6 a 4 b 3 ) ( 4 a b 5 ) ( 12 a 2 b ) ( a 3 b )

Got questions? Get instant answers now!

( 4 u 2 v 5 ) ( 15 u 3 v ) ( 12 u 3 v ) ( u 4 v )

5 v 4 u 2

Got questions? Get instant answers now!

Mixed Practice


24 a 5 + 2 a 5
24 a 5 2 a 5
24 a 5 · 2 a 5
24 a 5 ÷ 2 a 5

Got questions? Get instant answers now!


15 n 10 + 3 n 10
15 n 10 3 n 10
15 n 10 · 3 n 10
15 n 10 ÷ 3 n 10

18 n 10
12 n 10
45 n 20
5

Got questions? Get instant answers now!


p 4 · p 6
( p 4 ) 6

Got questions? Get instant answers now!


q 5 · q 3
( q 5 ) 3

q 8
q 15

Got questions? Get instant answers now!


z 6 z 5
z 5 z 6

z 1 z

Got questions? Get instant answers now!

( 8 x 5 ) ( 9 x ) ÷ 6 x 3

Got questions? Get instant answers now!

( 4 y ) ( 12 y 7 ) ÷ 8 y 2

6 y 6

Got questions? Get instant answers now!

27 a 7 3 a 3 + 54 a 9 9 a 5

Got questions? Get instant answers now!

32 c 11 4 c 5 + 42 c 9 6 c 3

15 c 6

Got questions? Get instant answers now!

32 y 5 8 y 2 60 y 10 5 y 7

Got questions? Get instant answers now!

48 x 6 6 x 4 35 x 9 7 x 7

3 x 2

Got questions? Get instant answers now!

63 r 6 s 3 9 r 4 s 2 72 r 2 s 2 6 s

Got questions? Get instant answers now!

56 y 4 z 5 7 y 3 z 3 45 y 2 z 2 5 y

y z 2

Got questions? Get instant answers now!

Everyday math

Memory One megabyte is approximately 10 6 bytes. One gigabyte is approximately 10 9 bytes. How many megabytes are in one gigabyte?

Got questions? Get instant answers now!

Memory One gigabyte is approximately 10 9 bytes. One terabyte is approximately 10 12 bytes. How many gigabytes are in one terabyte?

10 3

Got questions? Get instant answers now!

Writing exercises

Jennifer thinks the quotient a 24 a 6 simplifies to a 4 . What is wrong with her reasoning?

Got questions? Get instant answers now!

Maurice simplifies the quotient d 7 d by writing d 7 d = 7 . What is wrong with his reasoning?

Answers will vary.

Got questions? Get instant answers now!

When Drake simplified 3 0 and ( −3 ) 0 he got the same answer. Explain how using the Order of Operations correctly gives different answers.

Got questions? Get instant answers now!

Robert thinks x 0 simplifies to 0. What would you say to convince Robert he is wrong?

Answers will vary.

Got questions? Get instant answers now!

Self check

After completing the exercises, use this checklist to evaluate your mastery of the objectives of this section.

This is a table that has six rows and four columns. In the first row, which is a header row, the cells read from left to right “I can…,” “Confidently,” “With some help,” and “No-I don’t get it!” The first column below “I can…” reads “simplify expressions using the Quotient Property for Exponents,” “simplify expressions with zero exponents,” “simplify expressions using the Quotient to a Power Property,” “simplify expressions by applying several properties,” and “divide monomials.” The rest of the cells are blank.

On a scale of 1-10, how would you rate your mastery of this section in light of your responses on the checklist? How can you improve this?

Questions & Answers

what is microbiology
Agebe Reply
What is a cell
Odelana Reply
what is cell
Mohammed
how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Elementary algebra. OpenStax CNX. Jan 18, 2017 Download for free at http://cnx.org/content/col12116/1.2
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Elementary algebra' conversation and receive update notifications?

Ask