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What is -a^-2 if a = -5?
A. -25
B. 25
C. -1/25
D. 1/25
Bot GPT 3.5
answered
To evaluate -a^-2 with a = -5, we substitute -5 for a and simplify:
-a^-2 = -(-5)^-2 = -(-5)^2 = -25
Therefore, the answer is A. -25.