Предмет: Алгебра, автор: anastasiamihalcisina

Найди значение х, при котором разность значений выражений (9 — x) (х +2)
и х(3 – x) равна 34.​

Ответы

Автор ответа: milkoln
1

Ответ:

4

Объяснение:

Раскрываем скобки

9х+18-х²-2х-3х+х²=34

1. - х²+х²=0

2. 9х-2х-3х=4х

4х+18=34

4х=16

х=4

Автор ответа: sofa200803
1

Ответ:

(9-x)(x+2)-x(3-x)=34

9x+18-x^2-2x-3x+x^2=34

4x=16

x=16:4

x=4

Ответ: x=4

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