Памагите уравнение x^4-4x^2=0 x^2-4x+4=0 (x-3)(x+4)=0 x^3-2x^2+x=0

Question

Памагите уравнение
x^4-4x^2=0
x^2-4x+4=0
(x-3)(x+4)=0
x^3-2x^2+x=0

Answer 1

X^2(x^2-4)=0
x=0
x^2=4
x=+-2
(x-2)^2=0
x-2=0
x=2
(x-3)(x+4)=0
x=3
x=-4
x(x^2-2x+1)=0
x=0
(x-1)^2=0
x-1=0
x=1