因式分解X^4+X^2Y^2+Y^2

题目绝对没错 绝对没错!是天一少年班的题目!
2025-01-07 00:10:15
推荐回答(3个)
回答1:

x^4+x^2y^2+y^4
=[(x^2)^2+2x^2y^2+(y^2)^2]-x^2y^2
=(x^2+y^2)^2-(xy)^2
=(x^2+y^2-xy)-(x^2+y^2-xy)

回答2:

原式=x^4+2x^2y^2+y^4-x^2y^2
=(x^2+y^2)^2-x^2y^2
=(x^2+xy+y^2)(x^2-xy+y^2)

回答3:

我想,你这个题写错了。应该是y^4

x^4+x^2y^2+y^4

=x^4+2x^2y^2+y^4-x^2y^2

=(x^2+y^2)^2-x^2y^2

=(x^2+y^2+xy)(x^2+y^2-xy)