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Simplify (5ab^2-4ab 7a^2b) (ab )^-1
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Simplify
(5ab^2-4ab 7a^2b) (ab )^-1

User Mysterlune
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(5ab^2-4ab+7a^2b) (ab )^(-1 )=(5ab^2-4ab+7a^2b) a^(-1)b^(-1)\\\\=\boxed{5b-4+7a}
User Swuk
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