Question

решите уравнение
x^4-2x^2+1=0

Answer 1

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

Answer 2

x⁴-2x²+1=0
(x²-1)² = 0
x²-1 =0 
x₁= -1
x₂ = 1