4^-2·7^-2 which expressions are equivalent

asked Jun 5, 2023 52.6k views

4 votes

by Jkh

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5 votes

Recall the following property of exponents:

Then:

$4^(-2)\cdot7^(-2)=(1)/(4^2)\cdot(1)/(7^2)=(1)/(16)\cdot(1)/(49)=(1)/(784)$

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