x*x+xy -6y*y+x+13y-6 因式分解
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x方+xy-6y方+x+13y-6
x^2+xy-6y^2+x+13y-6
因式分解:3xy(x-y)+6y(y-x)
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少?
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
x*x+xy -6y*y+x+13y-6 因式分解
x*x+y*y+4x-6y+13=0求xy=?
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x,
6x^-13xy+6y^因式分解
|x|/x+y/|y|+xy/|xy|=
已知x+y=6,xy=7,试求x*x+y*y,x*x-y*y的值
已知xy=-2,x-y=3,求(x+y)(x-y)-y^2+(x-y)^2-(6x^2y-2xy^2)÷2y
x^2-xy-6y^2+3xy+y+2
x^2+xy-6y^2-3x+6y
x²+3xy+2y-x+y-6因式分解
2x^2+3xy+y^2+x-y-6