因式分解:(x^2+1)^2-4x^2

因式分解:(x^2+1)^2-4x^2
2025-03-25 18:30:34
推荐回答(2个)
回答1:

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

回答2:

(x^2+1)^2-4x(x^2-1)
=(x^2-1)^2-4x(x^2-1)+4x^2
=[x^2-1-2x]^2