Б!!!!!!!!!!!!!!!!!!!!

Question

Б!!!!!!!!!!!!!!!!!!!!

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Answer 1

(4a^3 - 3b)2b - 3b(10a^3 - 4b) =
= 8a^3b - 6b^2 - 30a^3b + 12b^2 = 
= - 22*a^3*b + 6*b^2