решите уравнение (3x-9)^2-(3x+3)^2=0. Created by 08Anna80. algebra-ru

решите уравнение (3x-9)^2-(3x+3)^2=0...

08Anna80 @08Anna80

July 2022 1 12 Report

решите уравнение
(3x-9)^2-(3x+3)^2=0

Answers & Comments

lara164

Verified answer

Применим формулу разности квадратов и получим
(3х-9-(3х+3))*(3х-9+(3х+3))=0
(3х-9-3х-3)*(3х-9+3х+3)=0
-12(6х-6)=0
-12*6(х-1)=0
-72(х-1)=0
х-1=0
х=1
Ответ: х=1

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