Negative Exponents - AMA Manual of Style

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Negative Exponents 

Negative Exponents

Chapter:
Mathematical Composition
Author(s):

Stephen J. Lurie

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Negative Exponents

A negative exponent denotes the reciprocal of the expression, as illustrated in these examples:

x−n= 1/xnA−1 = 1/AB−2 = 1/B2

A negative exponent may simplify some expressions within running text:

A(x+y)2mayalsobewrittenasA(x+y)-2orA/(x+y)2

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