Question

evaluate the following (-3/7)^-2

Answer 1

see this photo

First make power of -2 into +2

By doing reciprocal of the fraction but dont change signs then simply solve it

Answer 2

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Here is your answer.
$( \frac{ - 3}{7} ) {}^{ - 2} \\ \\ = ( \frac{7}{ - 3} ) {}^{ 2} \\ \\ = \frac{7 \times 7}{( - 3)( - 3)} \\ \\ = \frac{49}{9}$
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