А можно вот такое уравнение X^4=(x-2)^2 решить так на ОГЭ?:
(x^2)^2=(x-2)^2
(x^2)^2-(x-2)^2=0
(x^2+x-2)-(x^2+x-2)=0
x^2+x-2=0
D=1-4*(-2)=3^2
x1=-1+3/2=1 x2=-1-3/2=-2
Ответ:1,-2
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