trmccal32 trmccal32
  • 08-01-2015
  • Mathematics
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what is -a^-2 if a=-5

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konrad509
konrad509 konrad509
  • 08-01-2015
[tex]-a^{-2}=-(-5)^{-2}=-\left(\dfrac{1}{-5}\right)^2=-\dfrac{1}{25}[/tex]
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