x2+3xy+2y2+2x+y-3 怎么分解,大虾请进!3Q
x2+3xy+2y2+2x+y-3 怎么分解,大虾请进!3Q
分解因式:x2+3xy+2y2+4x+5y+3.
分解因式2x2-xy-6y2+7x+7y+3=______.
已知2x=3y,求xy/(x2+y2)-y2/(x2-y2)的值
x2-2xy+y2+3x-3y+2.
2x2+xy-3y2+x+4y-1因式分解
分解因式:(1)(x2+2x+3)(x2+2x+2)-30; (2)x2+2xy+y2-4x-4y-12;(3
已知:x=3,y=-5,x2-2xy+y2/x2-y2的值是
分解因式①3a3-18a2+27a②x2+4xy+4y2-2x-4y-3
x(x-1)-(x2-y)=-3,求x2-y2-2xy的值
x(x-1)-(x2-y)=-3,求x2+y2-2xy的值
已知x(x-1)-(x2-y)=-3,求x2+y2-2xy的值