Card 8 / 13: 5. If a^b = c^d, which of the following is not necessarily true?
A)
a^b - c^d = 0
B)
a^b + c^d = 2 * (a^b)
C)
(a^b)/(c^d) = 1
D)
a = c
E)
a^b * c^d = a^(2*b)
Answer:
D) a = c
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