若x-y=1,xy=5,则x^2y-xy^2=
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若x-y=1,xy=5,则x^2y-xy^2=
x^2y-xy^2
=xy(x-y)
=5×1
=5.
若x-y=4,xy=1,则(2x+y-2xy)-(3x+2y+xy)-(4xy+3y-5x)=
若x-y=1,xy=5,则x^2y-xy^2=
若xy/x+y=2,则3x-5xy+3y/-x+3xy-y=?/是分之
已知xy/x+y=1/2,则代数式3x-5xy+3y/-x+3xy-y=
若x/1-y/1=5,则x-2xy-y/2x+5xy-2y=?
若1/x+1/y=2,则(2x-xy+2y)÷(3x+5xy+3y)
已知x+y=1,xy=-2,则x²y+xy²-2xy
若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思,是3x-2xy-3y/x-2xy-y
若 x+y=5,xy=-50 则x^2y+xy^2 =( )
已知x+y=1,xy=1/5,则x^2y=xy^2
|x|/x+y/|y|+xy/|xy|=
若x+y分之xy=2,则-x+3xy-y分之3x-xy+3y=多少?
若x+y分之xy=2,则-x+3xy-y分之3x-xy+3y=多少?
若xy/x+y=2,则3x-xy+3y/-x+3xy-y=
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
若xy=2(x+y),求 (3x-5xy+3y)÷(-x+3xy-y) 的值
若x-y=4,xy=1,求(-2xy+2x+3y)-(3xy+2y-2x)-(x+4y+xy)的值
(-2xy+2x+5y)-(3xy+2y-2x)-(x+4y+xy)其中x-y=4xy=-1