(xy-x^2)/(x-y)/xy 第一个是除号,第二个是分数
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(xy-x^2)/(x-y)/xy第一个是除号,第二个是分数(xy-x^2)/(x-y)/xy第一个是除号,第二个是分数(xy-x^2)/(x-y)/xy第一个是除号,第二个是分数原式=-x(x-y)
(xy-x^2)/(x-y)/xy 第一个是除号,第二个是分数
(xy-x^2)/(x-y)/xy 第一个是除号,第二个是分数
(xy-x^2)/(x-y)/xy 第一个是除号,第二个是分数
原式=-x(x-y)×xy/(x-y)
=-x(xy)
=-x^2y
x^2-xy/xy-y^2约分
第一题:(3xy^2)^2+(-xy^3)×(-4xy) 第二题:(2x^3y)2×(-2xy)+(-2x^3y)^3×(2x)^2
(x^2+xy/x-y)/(xy/x-y)计算
2x²y-3(2xy-xy)-xy
【x(xy-xy)-y(x-xy)】÷3xy
(x^2+2xy+y^2-4xy)*(x^2-2xy+y^2+4xy)
.(x+y-2)(x+y-2xy)+(xy-1)^2
(x^2-xy)y÷y-x/xy怎么做?
|x|/x+y/|y|+xy/|xy|=
(xy-x²)÷(x²-2xy+y²/xy)×(x-y/x²)
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
(y/(x^2-xy)+x/(y^2-xy))除以(x-y)/(xy)
(-x-y)(x^2+xy+y^2)
化简x^-y^/x^-2xy+y^
2*(x-y)²(y-x)(xy)
初二数学化简分式x^2 -y^2/xy - xy-y^2/xy-x^2x^2 -y^2/xy - xy-y^2/xy-x^2
3xy(x^2y-xy^2+xy)-xy^2(2x^2-6xy+2x)过程
((xy+2)(xy-2)-2x²y²+5(xy-y)²)÷(2xy)