Автор - KaryaDunya

(3m-4n) (3m+5n) -(4, 5m-n) (2m+4n)

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Ответ

Автор - aleksorlovs

(3m-4n) (3m+5n) -(4, 5m-n) (2m+4n)

9м2+3м-20п2-8,4м2-14,8мп+4п2

0,6м2-16п2+3м-14,8мп

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