问题
填空题
分解因式:x4-x2y2+y4=______.
答案
x4-x2y2+y4=
=x4+2x2y2+y4-3x2y2
=(x2+y2)2-3x2y2
=(x2+
xy+y2)(x2-3
xy+y2).3
分解因式:x4-x2y2+y4=______.
x4-x2y2+y4=
=x4+2x2y2+y4-3x2y2
=(x2+y2)2-3x2y2
=(x2+
xy+y2)(x2-3
xy+y2).3