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