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OpenStudy (anonymous):
Write the expression with positive exponents and simplify as much as possible (For example, instead of 1/9^2, enter 1/81) Simplify: (-2) ^ -1 =
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OpenStudy (lucaz):
negative exponents gives you the reciprocal with positiveexponent in the denomitator, so b^-exp=1/b^exp (-2)^-1=1/(-2)
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