x^4-4x^2y^2-4y^2因式分解
问题描述:
x^4-4x^2y^2-4y^2因式分解
答
x^4-4x^2y^2-4y^2 =(x^2)^2-2×2x^2y^2-(2y)^2 =(x^2-2y)^2
x^4-4x^2y^2-4y^2因式分解
x^4-4x^2y^2-4y^2 =(x^2)^2-2×2x^2y^2-(2y)^2 =(x^2-2y)^2