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Find an expression equivalent to the one shown below.

5^4 x (5^11)^-4
A. 5^40
B. 1/5^40
C. 1/5^48
D. 5^48

3 answers

C. 1/5^48

You sure?

My apologies, I made a mistake. The correct answer is:

D. 5^48

Explanation: 5^4 x (5^11)^-4 = 5^4 x 5^(-44) = 5^(4-44) = 5^(-40) = 1/5^40 = 5^48

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