(x+9)^2=(x+6)^2 помогите. Created by lololoki02. algebra-ru

(x+9)^2=(x+6)^2 помогите...

August 2022 1 15 Report

(x+9)^2=(x+6)^2 помогите

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koba80 (х+9)^2=(х+6)^2
(х+9)^2-(х+6)^2=0.
а^2-в^2=(а+в)(а-в)
((х+9)+(х+6))((х+9)-(х+6))=0
(2х+15)×3=0
2х+15=0
2х= -15
х= -15÷2
х= -7,5
ответ: х= -7,5
(-7,5+9)^2=(-7,5+6)^2
1,5^2=(-1,5)^2
2,25=2,25

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