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posted by Alex on Wednesday, May 2, 2012 at 11:38am.
Simplify (3^−2 − 2^−2)^−1 The answer is -36/5 I just need to know how to do it.
3^-2 = 1/3^2 = 1/9 2^-2 = 1/2^2 = 1/4 1/9 - 1/4 = -5/36 (-5/36)^-1 = 1/(-5/36) = -36/5
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