24.9(x-y)2+12(x2-y2)+4(x+y)2因式分解为 [ ]
2x2+xy-3y2+x+4y-1因式分解
因式分解:x2-9a2+12a-4;x2y+3xy2-x-3y;1-x2-2xy-y2;3a2+2b-2ab-3a;x2
x2-xy-2y2-x+5y-2因式分解
因式分解 x2+xy-2y2-x+7y-6
若实数xy满足x2十y2-2x+4y=0,则x-2y的最大值为多少?
化简x2+2x+1分之x2-y2÷x+1分之x-y
因式分解方法x2-xy+2x-y-3是x方-xy+2x-y-3,
因式分解X2(Y+Z)+Y2(Z+X)+Z2(X+Y)-(X3+Y3+Z3)-2XYZ
x2(x-y)+y2(y+x)因式分解,2是平方的意思
由X2-2XY+Y2-X+Y-1=0得到X-Y的值为.
若|x+2|+|y-3|=0,则x2+y2=________
阅读下面例题:把多项式x2-2xy+y2-2x+2y+1因式分解.