Предмет: Алгебра, автор: 79222606929

25-12x+(x-5)(x+5)-(5-x)

Ответы

Автор ответа: корчик

$25-12x+(x-5)(x+5)-(5-x)$

$25-12x+x^2+5x-5x-25-5+x$

$x^2-5-11$

$x^2=-11-5$

$x^2=-6$

$x=-6:2$

x $x=-3$

Автор ответа: PolliPlat

25-12x+x+x^2-5^2-5+x=20-11x+x-5^2=-5-10x

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