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Nailfo
@Nailfo
July 2022
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Решите уравнение с модулем |2х+5|=|х|+2
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dinarkaik
|2x+5|=|x|+2
(2x+5)^2=(x+2)^2
4x^2+20x+25=x^2-4x+4
3x^2+24x+21=0 |:3
x^2+8x+7=0
x1=-7 ; x2=-1
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Answers & Comments
(2x+5)^2=(x+2)^2
4x^2+20x+25=x^2-4x+4
3x^2+24x+21=0 |:3
x^2+8x+7=0
x1=-7 ; x2=-1