x^2+3xy+2y^2+5x+5y+6
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 求过程 x-xy+3y-3x 2x+xy-y-4x+5y-6
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)
√x(√x+2√y)=√y(6√x+5√y,求x-3√xy+2y/x+√xy-6y
∫x(∫x+2∫y)=∫y(6∫x+5∫y),求:(x+∫xy-y)/(2x+∫xy+3y)
x*-2xy+3y*=9 4x*-5xy+6y*=30
[-(x-y)^2/xy]^-4*(y^2-xy/x)^3*(x^4/y^10)÷(xy-y^2/x)^-5=-y(y-
x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)
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)
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值