(x+y)^2-(x^3+y^3)除以(x+y) (x^3+y^3)除以(x+y)这部分怎么算?
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(x+y)^2-(x^3+y^3)除以(x+y)(x^3+y^3)除以(x+y)这部分怎么算?(x+y)^2-(x^3+y^3)除以(x+y)(x^3+y^3)除以(x+y)这部分怎么算?(x+y)^
(x+y)^2-(x^3+y^3)除以(x+y) (x^3+y^3)除以(x+y)这部分怎么算?
(x+y)^2-(x^3+y^3)除以(x+y) (x^3+y^3)除以(x+y)这部分怎么算?
(x+y)^2-(x^3+y^3)除以(x+y) (x^3+y^3)除以(x+y)这部分怎么算?
(x^3+y^3)=(x+y)(x^2-xy+y^2)
x^3+y^3=(x+y)(x^2-xy+y^2)
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