因式分解:x2-y2+x3-y3

谢谢
2024-11-22 22:38:11
推荐回答(4个)
回答(1):

给好评啊!!!
原式=(x+y)(x-y)+(x-y)(x平方+xy+y平方)=(x-y)(x平方+xy+x+y+y平方)

回答(2):

(X+Y)(X-Y)+(X+Y)(X平方-XY+Y平方)

回答(3):


x²-y²+x³-y³
=(x-y)(x+y)+(x-y)(x²+xy+y²)
=(x-y)(x+y+x²+xy+y²)

x³-y³
=(x-y)(x²+xy+y)立方差公式

回答(4):

x²-y²+x³-y³
=(x+y)(x-y)+(x-y)(x²+xy+y²)
=(x-y)(x+y+x²+xy+y²)