(2x^2-x^2+y^2)(x^2-2xy+y^2+2y^2)
因式分解:x×x-xy-2y×y-x-y
(x^2+xy/x-y)/(xy/x-y)计算
(xy-x^2)乘以(xy)/(x-y)
作乘法:(x+y)(x^2-xy+y^2);(x-y)(x^2+xy+y^2)
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
(x+y)(x-y)-(2xy+3y)平方
2xy/(x+y)(x+y)与x/(x+y)(x-y)怎么通分
(x+y-2xy)(x+y-2)+(1-xy)²
(x^2-xy)y÷y-x/xy怎么做?
因式分解xy+y平方+x-y-2
x^2y+4xy+4y