2/3 - 15(-1/2)^2 + (-1/2)^-2 = 2/3 - 7.5 + 1?
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Originally Posted by x-disturbed-x 2/3 - 15(-1/2)^2 + (-1/2)^-2 = 2/3 - 7.5 + 1? $\displaystyle (-1/2)^2\ =\ (-1/2).(-1/2)\ =\ 1/4$ $\displaystyle (-1/2)^{-2}\ =\ (-2).(-2)\ =\ 4$ so now you should be able to complete this yourself. RonL
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