Simplify the expression: ab2+3a3b−8ab2+4a3b+2a3b
ab^2 + 3a^3b - 8ab^2 + 4a^3b + 2a^3b combine like terms
(ab^2 - 8ab^2 ) + (3a^3b + 4a^3b + 2a^3b) =
-7ab^2 + 9a^3b
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