8.4 Homework: radicals

$\sqrt{64}$

$\sqrt[3]{64}$

$3\sqrt{64}$

$-\sqrt{64}$

$\sqrt{-64}$

$\sqrt[3]{-64}$

If $\sqrt[n]{\mathrm{-x}}$ has a real answer, what can you say about $n$ ?

$\sqrt{8}$

$\sqrt{18}$

$\sqrt{48}$

$\sqrt{70}$

$\sqrt{72}$

$\sqrt{100}$

$\sqrt{\frac{1}{4}}$

$\sqrt{\frac{4}{9}}$

$\sqrt{\frac{8}{12}}$

$\sqrt{16x^2}$

• A

  Simplify as much as possible (just like all the other problems)

• B

  Check your answer with $x=3$ . Did it work?

$\sqrt{(16x{)}^2}$

$\sqrt{x^{10}}$

$\sqrt{x^{11}}$

$\sqrt{75x^3{y}^6{z}^5}$

$\sqrt{x^2{y}^2}$

$\sqrt{x^2+y^2}$

$\sqrt{x^2+2xy+y^2}$

$\sqrt{x^2+9}$

$\sqrt{x^2+6x+9}$

$f\left(x\right)=x^2$

• A

  Find the inverse of the function.

• B

  Test it.

$f\left(x\right)=x^3$

• A

  Find the inverse of the function.

• B

  Test it.

$f\left(x\right)=3^x$

• A

  Find the inverse of the function.

• B

  Test it.