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Negative Exponents 

Mathematical Composition

Stephen J. Lurie

A negative exponent denotes the reciprocal of the expression, as illustrated in these examples: x−n= 1/xn A−1 = 1/A B−2 = 1/B2 A negative exponent may simplify some expressions within running text: A(x+y)2 may also be written  as  A(x+y)-2 or A/(x+y)2

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