Question

Evaluate 7^-2
A. -49
B. -1/49
C.1/49
D. -14

Answer 1

C . 1/49 because you need to multiply and square then minus

Answer 2

C. 1/49

Explanation:

When there is a negative sign located inside the power, you must eliminate it. To do so, put the whole expression under 1, and then simplify from there:

7^-2 = 1/(7^2)

Simplify: 7^2 = 7 x 7 = 49

1/49 is your answer.

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