Question

Разложите на множители. Помогите!!!
(x^2+1)^2-4x^2

Answer 1

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

Answer 2

$(x^2+1)^2-(2x)^2=(x^2+2x+1)(x^2-2x+1)=(x+1)^2(x-1)^2$