Question

Simplify the expression. Write the answer using scientific notation.

(2 × 10^13)^-2

A.-4×10^-26
B.0.25 ×10^-26
C.2.5×10^-27
D.2.5×10^-26

Answer 1

C. 2.5×10^-27

Explanation:

(2×10^-13)^-2 = 2^-2 × 10^(13×(-2)) = 1/4 × 10^-26

= 0.25 × 10^-26 = 2.5 × 10^-27

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