(xy-x^2)乘以(xy)/(x-y)
(xy-x^2)乘以(xy)/(x-y)
XY(XY-X2)乘以------------X-Y
(xy-x²)除以xy分之x²-2xy+y²乘以x²分之x-y
计算(2X的平方Y-XY)乘以3XY等于多少
(x^2+xy/x-y)/(xy/x-y)计算
(xy-x的平方)除以x的平方-2xy+y的平方\xy乘以x-y\x的平方
(x+y-2xy)(x+y-2)+(1-xy)²
(x^2-xy)y÷y-x/xy怎么做?
2加X平方加X平方乘以Y平方=2X-2XY
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
(3X平方+7XY+2Y平方)乘以(X-2Y)等于