brinkcwar brinkcwar
  • 03-02-2015
  • Mathematics
contestada

What does (-9)^-2 mean?

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apologiabiology
apologiabiology apologiabiology
  • 03-02-2015
it means -9 times -9 all under 1 so
1/(-9^2)=(-9)^-2

so the answer is 1/81
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