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vipudovitskiy
@vipudovitskiy
August 2022
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Решите пожалуйста . Сфотайте решение .
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Checov7400
(х²-2х)²+(х²-2х)=12 х²-2х=-4
х²-2х=t х²-2х+4=0
t²+t=12 t²+t-12=0 D=4-4*4<0 корней нет
t1+t2=-1
t1*t2=-12 х²-2х=3
t1=-4 t2=3 х²-2х-3=0
х1+х2=2
х1*х2=-3
х1=3
х2=-1
Ответ: х1=3
х2=-1
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Answers & Comments
х²-2х=t х²-2х+4=0
t²+t=12 t²+t-12=0 D=4-4*4<0 корней нет
t1+t2=-1
t1*t2=-12 х²-2х=3
t1=-4 t2=3 х²-2х-3=0
х1+х2=2
х1*х2=-3
х1=3
х2=-1
Ответ: х1=3
х2=-1