[x(x²y²-xy)-y(x²-x³y)]÷3x²y
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[x(x²y²-xy)-y(x²-x³y)]÷3x²y
=[x²y(xy-1)-x²y(1-xy)]÷3x²y
=[x²y(xy-1)+x²y(1+xy)]÷3x²y
=[x²y(xy-1+1+xy)]÷3x²y
=2x³y²÷3x²y
=三分之二xy
(三分之二不会表示,抱歉……)
=[x²y(xy-1)+x²y(1+xy)]÷3x²y
=[x²y(xy-1+1+xy)]÷3x²y
=2x³y²÷3x²y
=三分之二xy
(三分之二不会表示,抱歉……)
[x(x²y²-xy)-y(x²-x³y)]÷3x²y
因式分解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
x²/xy-x/y
【x(x²y²-xy)-y(x²-x³y)】÷3x²y
(xy-x²)²÷(x-y)²/xy·x-y/x² 计算
急![(3x+y)²-3(3x-y)(x+y)-(x-3y)(x+3y)]÷(2xy)
因式分解:1、[x(x²y²-xy)-y(x²-x³y)]÷3x²y.
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
[-xy/(x-y)²]²×(y²-xy/x)³
(x+y)(x²-xy+y²)—xy(x+y)因式分解
(x-y)(x²+xy+y²)解方程