(x+y)^2-x^2y^2 因式分解

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(x+y)^2-x^2y^2 因式分解

原式=(x+y+xy)(x+y-xy)

(x+y-xy)*(x+y-xy)

你好,
(x+y)²-x²y²
=(x+y)²-(xy)²
=(x+y+xy)(x+y-xy)(利用平方差公式)

(x+y)^2-x^2y^2=(x+y-XY)(x+y+XY)

(x+y)²-x²y²
=(x+y)²-(xy)²
=(x+y+xy)(x+y-xy)