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mac1140_lecture5_1 - L5 1.6 Rational Exponents Negative...

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36 L5 §1.6 Rational Exponents Negative exponents : For all real 0 a and integers n , 1 n n a a = . In particular, 1 1 a a = . Example . Write without negative exponents and simplify. a) 2 5 b) 2 3 2 c) 2 4 x y Caution. A negative exponent indicates a reciprocal , not a negative expression. Thus, if 0 a and 0 b , then n n a b b a = .
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