Предмет: Алгебра, автор: vvadishka2020

(2x+5)(x-4)=x(2x+7)
и очень подробно обьясните для меня чтоб я понял​

Ответы

Автор ответа: Аноним
1

Ответ:х=-2

Объяснение:(2x+5)(x-4)=x(2x+7) 

2х^2-8х+5х-20=2х^2+7х

-8х+5х-20=7х

-3х-20=7х

-3х-7х=20

-10х=20

х=-2

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