Предмет: Математика, автор: valeriamokrush

2x(x+1)-5x(x-1) упростить

Ответы

Автор ответа: igorShap
1
2x^2+2x-5x^2+5x=-3x^2+7x
Автор ответа: hELFire
1
2x(x+1)-5x(x-1)=2x^2+2x-5x^2+5x=\\ =(2-5)x^2+(2+5)x=-3x^2+7x
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