分解因式X^3-XY^2+X^2Y-Y^3

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分解因式X^3-XY^2+X^2Y-Y^3

分解因式X^3-XY^2+X^2Y-Y^3
分解因式X^3-XY^2+X^2Y-Y^3

分解因式X^3-XY^2+X^2Y-Y^3
X^3-XY^2+X^2Y-Y^3
=x³-y³+x²y-xy²
=(x-y)(x²+xy+y²)+xy(x-y)
=(x-y)(x²+xy+y²+xy)
=(x-y)(x²+2xy+y²)
=(x-y)(x+y)²

(X-Y)(X+Y)^2

X^3-XY^2+X^2Y-Y^3
=(X^3-Y^3)+(X^2Y-XY^2)
=(X-Y)(X^2+XY+Y^2)+XY(X-Y)
=(X-Y)(X^2+2XY+Y^2)
=(X-Y)(X+Y)^2

第一种: x^3-xy^2+x^2y-y^3 =(x^3-xy^2)+(x^2y-y^3) =x(x^2-y^2)+y(x^2-y^2) =(x+y)(x^2-y^2) =(x+y)(x+y)(x

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