(3х-4)(х+2)=(х-3)²-20. Created by 13518. algebra-ru

(3х-4)(х+2)=(х-3)²-20...

August 2022 1 14 Report

(3х-4)(х+2)=(х-3)²-20

kunnei2 3х^2+2х-8=х^2-6х+9-20
приводим к квадр уравнению
2х^2+8х+3=0
D=64-4*2*3=40
x=(-4+sqrt10)/2
x=(-4-sqrt10)/2

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