若x+y=5,xy=6,则x2+y2=______.
若x+y=5,xy=6,则x2+y2=______.
已知x+y=-5,xy=6,则x2+y2=______.
若|x+y-5|+(xy-6)2=0,则x2+y2的值为______.
若x2+y2=12,xy=4,则x-y=______.
若x-y=1,x2+y2=25,则xy=______.
已知x+y=5,xy=3 则x2+y2=______.
已知x+y=4,xy=2,则x2+y2+3xy=______.
已知x2+xy=5,xy+y2=-1,则x2-y2=______.
已知x+y=17,xy=60,则x2+y2=______.
分解因式:x2+xy-6y2+x+13y-6=______.
分解因式2x2-xy-6y2+7x+7y+3=______.
分解因式:x2-2xy-8y2-x-14y-6=______.