计算：(X+Y)(X^2-XY+Y^2)

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/08/24 16:23:14

(X+Y)(X^2-XY+Y^2)
=(x*x^2-x*xy+x*y^2)+(x^2y-xy^2+y^3)
=x^3+y^3
这个是立方和的公式,再给你一个
x^3-y^3=(X-Y)(X^2+XY+Y^2)
这是立方差的公式

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