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

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

User Jkh
by
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1 Answer

5 votes

Recall the following property of exponents:


a^(-n)=(1)/(a^n)

Then:


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

User Linto Cheeran
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