分解因式:(xy+1)-(x+y)=

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分解因式:(xy+1)-(x+y)=
x){b⧳<~Ϭ{:** 5u5*+5mm )/!4J] O¶BR$ "m5*$ {Gϳ9{6$AsZ [[ 2`X@r u+aNͫEC'݈

分解因式:(xy+1)-(x+y)=
分解因式:(xy+1)-(x+y)=

分解因式:(xy+1)-(x+y)=
(xy+1)-(x+y)=xy-y+1-x=x(y-1)-(y-1)=(x-1)(y-1)
希望可以采纳

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

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