а) 9х^2-(3х+5)(3х-5)=2х б) х^2=5х+(х+4)(х-4) в) (х+1)^2+2=0 г) (х-5)^2=(х-4)(х+4). Created by 130181. algebra-ru

а) 9х^2-(3х+5)(3х-5)=2х б) х^2=5х+(х+4)(х-4) в) (х+1)^2+2=0 г) (х-5)^2=(х-4)(х+...

July 2022 1 19 Report

а) 9х^2-(3х+5)(3х-5)=2х
б) х^2=5х+(х+4)(х-4)
в) (х+1)^2+2=0
г) (х-5)^2=(х-4)(х+4)

Answers & Comments

tanusikm 1) 9х^2-9х^2+25=2х
2х=25
х=12,5
2) х^2=5х+х^2-16
5х=16
х=3,2
3) х^2+2х+1+2=0
х^2+2х+3=0
D= 4-4*1*3=-9<0
Корней нет
4) х^2-10х+25=х^2-16
-10х=-16-25
-10х=-41
х=4,1

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m na 3 sm

dopomozhit rozvyazatib1c4dee46a41ed4f732059c7ffbf562d 41764

10=...

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