(3a^2/x+2y)^3乘(x^2-4xy+4y^2)除以(2y-x/x+2y)^2
(3a^2/x+2y)^3乘(x^2-4xy+4y^2)除以(2y-x/x+2y)^2
[x(x^2y^2-xy)-y(x^2-x^3y)]除以3x^2y
计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2)
x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8
因式分解:4a^2(x-y)+9(y-x) -4x^2y^2+x^3y+4xy^3
{(z+y)(x-y)-(x-y)的2次方+2y(x-y)}除以4y
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
已知3x^2+xy-2y^2=0,求{(x+y)/(x-y)+4xy/(y^2-x^2)}/{(x+3y)*(x-y)}
(x/x+y +2y/x+y)乘以xy/ x+2y除以(1/x+1/y)(2)(3x^2/4y)^2乘以2y/3x+ x
已知A除以x²+4xy+4y²分之x²-y²=x+2y分之x+2y,当x=2,y
(2x-y)(2x+y)+(2x-y)(y-4x)+2y(y-3x)+2x^4y^2÷(xy)^2
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)