Question

Evaluate the expression. (-3)^-2

Answer 1

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Explanation:

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Answer 2

`~~(-3)^(-2)\\\\\\=\frac 1{(-3)^2}~~~~~~~~~~~~~~~~~~~~~~~~~;\left[k^(-n) = \frac 1{k^n},~~~ k \\eq 0\right]\\\\\\=\frac 1{(-1)^2 \cdot 3^2}\\\\\\=\frac 1{1 * 9}\\\\\\=\frac 19`