trmccal32
trmccal32
08-01-2015
Mathematics
Answered
what is -a^-2 if a=-5
Answer :
konrad509
konrad509
08-01-2015
[tex]-a^{-2}=-(-5)^{-2}=-\left(\dfrac{1}{-5}\right)^2=-\dfrac{1}{25}[/tex]
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