Автор - idtw

упростите:(b-3)(b-4)-(b+4)в квадрате

Ответ

Автор - KiriharaAkira

(b-3)(b-4)-(b+4)^2=b^2-7b+12-(b^2+8b+16)=b^2-7b+12-b^2-8b-16=-15b-4

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