Предмет: Алгебра, автор: dlhyupop

Розв'яжіть рівняння (x-2) (x+2)-(x-3)²=15

Ответы

Автор ответа: hiroshi042

1

Ответ:

Объяснение:

приложение photomath ‍♀

Приложения:

Автор ответа: gsusoeoebw

0

x[2]-4-(x[2]-6x+9)=15
-x[2]-4-x[2]+6x-9=15

-4+6x-9=15

-13+6x=15

6x=15+13

6x=28

x=28:6

x=14/3 або ж 4 2/3 , або 4,6

[2] - квадрат

Якщо перед дужками стоїть мінус , то при розкриті дужок знак міняється на протилежний.

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