Simplify 7^-9 x 7^-7x 7^-9 leaving your answer in the form a^n where a is a whole number

asked Sep 9, 2019 226k views

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by Goba

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${7}^( - 9) * {7}^( - 7) * {7}^( - 9) \\ = {7}^( (- 9) + ( - 7) + ( - 9)) \\ = {7}^( - 9 - 7 - 9) \\ = {7}^( - 25)$

ShoeMaker answered Sep 15, 2019

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