решите уравнение (х-2)(х^2(в квадрате)+2х +1)=49 (х+1). Created by akula66. algebra-ru

решите уравнение (х-2)(х^2(в квадрате)+2х +1)=49 (х+1)...

akula66 @akula66

July 2022 2 5 Report

решите уравнение (х-2)(х^2(в квадрате)+2х +1)=49 (х+1)

amin07am

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sedinalana

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(x-2)(x²+2x+1)-49(x+1)=0
(x-2)(x+1)²-49(x+1)=0
(x+1)[(x-2)(x+1)-49]=0
(x+1)(x²+x-2x-2-49)=0
(x+1)(x²-x-51)=0
x+1=0
x=-1
x²-x-51=0
D=1+204=205
x=(1-√205)/2
x=(1+√205)/2

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