Предмет: Алгебра, автор: bigfut2009

Розв'язати рівняння (х-1)(х+1)=2(х-5)2-х(х-3).

Ответы

Автор ответа: db1515

(х-1)(х+1)=2(х-5)² -х(х-3)
х²-1=2*(х² -10х+25) -х²+3х
х²-1=2х² -20х+50 -х² +3х
х²-1-2х²+20х-50+х²-3х=0
17х-51=0
17х=51
х=51 :17
х=3

Автор ответа: rak123456

Как-то так прости эсли не правильно

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