对（xy+1))(x+1)(y+1)+xy进行因式分解.

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对（xy+1))(x+1)(y+1)+xy进行因式分解.

对（xy+1))(x+1)(y+1)+xy进行因式分解.
对（xy+1))(x+1)(y+1)+xy进行因式分解.

对（xy+1))(x+1)(y+1)+xy进行因式分解.
(xy+1)(x+1)(y+1)+xy
展开(x+1)(y+1)展开,得
(xy+1)(xy+x+y+1)+xy
即(xy+1)(xy+1+x+y)+xy
将(xy+1)当做一个整体,展开得
(xy+1)^2+(xy+1)(x+y)+xy
十字相乘法,得
(xy+x+1)(xy+y+1)
答案：(xy+1)(x+1)(y+1)+xy = (xy+x+1)(xy+y+1)

(xy+1)(x+1)(y+1)+xy = (xy+x+1)(xy+y+1)

（xy+1))(x+1)(y+1)+xy
=（xy+1)(xy+x+y+1)+xy
=（xy+1)^2+(xy+1)(x+y)+xy
=（xy+1+x)(xy+1+y)

(xy+1)(x+1)(y+1)+xy
=x^2y^2+x^2y+xy^2+2xy+x+y+1
=(x^2y^2+2xy+1)+(x+y)+(x^2y+xy^2)
=(xy+1)^2+(x+y)+xy(x+y)
=(xy+1)^2+(x+y)(xy+1)
=(xy+1)(x+y+1)

x (a 1)-xy(x-y)(a-b) y (b 1) =x (a-b b 1)-xy(x-y)(a-b) y (b 1) =x (a-b) x (b 1)-xy(x-y)(a-b) y (b 1

对（xy+1))(x+1)(y+1)+xy进行因式分解. xy-1+x-y (xy+1)(x+1)(y+1)+xy (xy+1)(x+1)(y+1)+xy (xy+1)(x+1)(y+1)+xy .(x+y-2)(x+y-2xy)+(xy-1)^2 因式分解xy-x-y+1 xy+x+y+1因式分解 1-x-y+xy 因式分解 因式分解:xy+x+y+1 xy-1+x-y因式分解 xy-x-y+1因式分解 钻机XY-1 ,X,Y, 化简xy-1-x+y 证明:(y/x)+(x/y)+xy≥x+y+1 z=(1+xy)^y 对y的偏导数=1+xy)^y *ln(1+xy)*x 对么? 因式分解 x2(x+1)-y(xy+x) X>Y XY>0是1/X