(2y-3x)(4y^2+6xy+9x^2)
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化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
(X-3xy+4xy-y)-[-2x-2(xy-3/2xy)-y]+6xy的过程
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x,
已知x^2+9y^2-2x-6y+2=0,求{-(xy/(x-y)^2}^4*(y^2-xy/x)^3*x^4/y^10/(x/xy-y^2)^5的值
因式分解 (3x+2y)-(x-y)² x²-xy+3y-3x 2x²+xy-y²-4x+5y-6
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
已知x+y=4,x-y=6,化简xy(y²+y)-y²(xy+2x)-3xy
已知;x+y=4,x-y的绝对值=6,求xy(y的平方+y)-y的平方(xy+2x)-3xy先化简再求值
3(x-y)²-7(x-y)+8(x-y)²+6(x-y)求详细过程(2) 5xy-4x²y-8xy²+3xy-xy²+4x²y
4x-y/2根号x+根号y 9x-6根号xy+y/3根号x-根号y
x²-y²+5x+3y+4(x+y-2xy)(x+y-z)+(xy-1)²
5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2)
xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2
因式分解:x(y-3)-(2y-6) (x+y)^3-(x-y)^2(x+y) x(x^2-xy)-(4x^2-4xy)
分解公因式分解 x(y-3)-(2y-6) 2.(x+y)^3-(x-y)^2(x+y) 3.x(x^2-xy)-(4x^2-4xy)
(x-y)/(x+3y)*(x²+6xy+9y²)/(x²-y²)-2y/(x+y)
计算或化简:[(x-y)/(x+3y)]÷[(x²-y²)/(x²+6xy+9y²)]-(2y)/x+y