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onyushkina
@onyushkina
June 2022
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ПОМОГИТЕ ПОЖАЛУСТА
(2x-7)(x+1)+3(4x-10)(4x+1)=2(5x-2)^2-53
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Niki0213
(2х-7)(х+1)+3(4х-10)(4х+1)=2(5х-2)^2-53
2х^2+2х-7х-7+(12х-30)*(4х+1)=2(25х^2-20х+4)-53
2х^2+2х-7х-7+48х^2+12х-120х-30=50х^2-40х+8-53
50х^2-113х-37=50х^2-40х-45
-113х-37=-40х-45
-113х+40х=-45+37
-37х=-8
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Answers & Comments
2х^2+2х-7х-7+(12х-30)*(4х+1)=2(25х^2-20х+4)-53
2х^2+2х-7х-7+48х^2+12х-120х-30=50х^2-40х+8-53
50х^2-113х-37=50х^2-40х-45
-113х-37=-40х-45
-113х+40х=-45+37
-37х=-8