Question

Evaluate 1/2a^-4b^2 for a =-2 and b=4
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Answer 1

1/2

Explanation:

Put the numbers where the corresponding variables are and do the arithmetic.

1/2(-2)^(-4)·(4)^2 = 1/2(4^2/(-2)^4) = 1/2(16/16) = 1/2

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We used the rule of exponents ...

a^-b = 1/(a^b)