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https://www.khanacademy.org/math/algebra-1-tx/x36b5a29ce1c3a684:properties-of-exponents/x36b5a29ce1c3a684:simplify-rational-exponents/v/rewriting-expressions-with-exponents-challenge-1

Expand previous knowledge of isolated exponent rules to rewriting expressions using multiple rules in the same problem.

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