xx+2xy+yy-4x-4y-12的因式分解是多少

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xx+2xy+yy-4x-4y-12的因式分解是多少
xx+2xy+yy-4x-4y-12的因式分解是多少

xx+2xy+yy-4x-4y-12的因式分解是多少
x²+2xy+y²-4x-4y-12
=(x²+2xy+y²)-(4x+4y)-12
=(x+y)²-4(x+y)-12
=[(x+y)+2][(x+y)-6]
=(x+y+2)(x+y-6)

答：
xx+2xy+yy-4x-4y-12
=x²+2xy+y²-4x-4y-12
=(x+y)²-4(x+y)-6*2
=(x+y-6)(x+y+2)

xx+2xy+yy-4x-4y-12的因式分解是多少 xx-2xy+yy+4x-4y+4 xx+4xy+yy-2x-4y+6 因式分解因式分解：xx-2x-2yy+4y-xy 已知2x=3y,求xy/xx+yy-yy/xx-yy的值 xxx+2xy+yy-4x-4y-12的因式分解是多少开头是xx+2xy x-y/x+y=2,则xx+2xy+yy/4xy=? X-Y=4,xy=12则xx+YY的值若x-y=4,求(xx+yy)÷2-xy的值若x-y=4,求(xx+yy)÷2-xy的值 x,y为实数,且XX+YY/2+4≤XY+2Y求X,Y的值已知xx+yy+4x-6y+13=0,求（xx-2x）/xx+3yy的值. 已知x（x+1)-(xx+y)=3,求(xx+yy)/2-xy的值 x(x+1)-(xx+y)=-3,求(xx+yy)/2-xy的值若xx+yy-2x-6y+10=0,求分式（xx-yy）/xy的值. 已知xx+yy=7,xy=-2,求多项式5xx-3xy-4yy-11xy-7xx+2yy的值. 已知x,y是实数,且适合方程(xx+xy-12)(xx+xy-12)+(xy-2yy-1)(xy-2yy-1)=0求x,y的值如果3y=x+2z,那么xx+9yy+4zz-6xy-12yz+4xz的值是