如果x+y=10,xy=7,则x2y+xy2=______.
如果x+y=0,xy=-7,x2y+xy2=______,x2+y2=______.
已知x+y=6,xy=4,则x2y+xy2的值为______.
若x+y=5,xy=6,则x2y+xy2的值为______.
若x-y=3,xy=-2,则xy2-x2y的值是______.
如果2x+y=4,xy=3,那么2x2y+xy2的值为______.
若实数x,y满足xy+x+y+7=0,3x+3y=9+2xy,则x2y+xy2=______.
已知x+2y=5,xy=1.则2x2y+4xy2=______.
已知x+y=-5,xy=7,求x2y+xy2-x-y的值.
如果x+y=0,xy=-7,求①x2y+xy2; ②x2+y2.
已知x、y是正整数,并且xy+x+y=23,x2y+xy2=120,则x2+y2=______.
已知x+y=6,xy=-3,则x2y+xy2=
已知x+y=10,xy=24,求x3+y3-x2y-xy2的值