Помогите решить!!!!!ПОЗЯЗЯ. Created by Daniil2263. algebra-ru

Помогите решить!!!!!ПОЗЯЗЯ...

December 2021 1 24 Report

Помогите решить!!!!!ПОЗЯЗЯ

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MizoriesKun X₁*x₂=6
x₁+x₂=5 ⇒x₁=5-x₂
(5-x₂)*x₂=6
5x₂-x₂²-6=0⇒ x₂²-5x₂+6=0
D=25-24=1
1 x₂=(5+1)/2=3 x₁=5-3=2
2 x₂=(5-1)/2=2 x₁=5-2=3
ответ: (3;2),(2;3)

у=х²+2х-3
х²+2х-3=0
D=4+12=16
x₁=(-2+4)/2=1 (1;0)
х₂=(-2-4)/2=-3 (-3 ;0)

у=-х²+4х+5
D= 16+20=36
x₁=(-4+6)/ -2=-1 (-1;0)
х₂=(-4-6)/ -2=-5 ( 5 ;0)

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Daniil2263 August 2022 | 0 Ответы

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