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Автор - salikova44474

(5а-5b) (2a+2b)
помогите!!!!!!

Ответ

Автор - Flatron198
10a^2+10ab-10ab-10b^2=10a^2-10b^2

Ответ

Автор - murzig27
(5a-5b)(2a-2b)=5(a-b) 2(a+b)=(5+2)(a^2-b^2)

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