Предмет: Алгебра, автор: manchu23062011

(x + 7)(x - 2) - (x + 4)(x + 3) = - 2

Ответы

Автор ответа: rampoe

1

$(x+7)(x-2)-(x+4)(x+3)=-2\\\\x^2-2x+7x-14-(x^2+3x+4x+12)=-2\\\\x^2+5x-14-x^2-7x-12=-2\\\\-2x-26=-2\\\\-2x=24\\\\\boxed{x=-12}$

manchu23062011: Дякую

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