The equivalent expression of 9^-7 * 9^5 is 1/9^2
The expression is given as
9^-7 * 9^5
Apply the law of indices.
So, we have
9^-7 * 9^5 = 9^(-7 + 5)
Evaluate the sum
9^-7 * 9^5 = 9^-2
Rewrite as
9^-7 * 9^5 = 1/9^2
Hence, the equivalent expression of 9^-7 * 9^5 is 1/9^2
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