Question

СРОЧНО!!!! 20 БАЛЛОВ!!!!!!!

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Answer 1

$\displaystyle \tt 5ab^3-2a^2b-5ab^2\cdot2b+5a^2b^3=5ab^3-2a^2b-10ab^3+5a^2b^3=\\\\ \displaystyle \tt =\bold{5a^2b^3-2a^2b-5ab^3}$

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