(x+y)(x²+9y²)(x-y)=

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/02 08:17:47

(x+y)(x²+9y²)(x-y)=

=(x²-y²)(x²+9y²)=x^4-9y^4+8X^2y^2