(x+y)(x²+9y²)(x-y)=
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(x+y)(x²+9y²)(x-y)=(x+y)(x²+9y²)(x-y)=(x+y)(x²+9y²)(x-y)==(x²-y
(x+y)(x²+9y²)(x-y)=
(x+y)(x²+9y²)(x-y)=
(x+y)(x²+9y²)(x-y)=
=(x²-y²)(x²+9y²)=x^4-9y^4+8X^2y^2
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来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/25 05:01:30
(x+y)(x²+9y²)(x-y)=
(x+y)(x²+9y²)(x-y)=
(x+y)(x²+9y²)(x-y)=
=(x²-y²)(x²+9y²)=x^4-9y^4+8X^2y^2