Уравнение : (x + 3 )²-x = ( x-2 ) (2+x ). Created by vipta. algebra-ru

Уравнение : (x + 3 )²-x = ( x-2 ) (2+x )...

vipta @vipta

July 2022 2 11 Report

Уравнение : (x + 3 )²-x = ( x-2 ) (2+x )

lidochka085 (x + 3 )²-x = ( x-2 ) (2+x )
х²+6х+9-х=х²-4
5х=-4-9
5х=-13
х=-13/5
х=2,6

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elizagalbaeva2017 (x + 3 )²-x = ( x-2 ) (2+x )
х²+6х+9-х=2х+х²-4-2х
х²+6х-х-2х-х²+2х=-9-4 (х², 2х-зачеркиваем т.к. они одинаковы и с противоположными знаками)
6х-х=-13
5х=-13
х=-2.6
ответ: -2.6

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