若|y-3|+(x+2)2=0,则xy的值为______.
若|x+y-5|+(xy-6)2=0,则x2+y2的值为______.
若|2x+y-1|+(x-2y)2=0,则x2+xy+y2的值为______.
若2x+y=0,则代数式4x3+2xy(x+y)+y3的值为______.
如果x+y=-3,xy=-2,那么x3y2+x2y3的值为______.
已知实数x、y满足x2+4xy+4y2+x+2y-6=0,则x+2y的值为______.
若x-y=3,xy=-2,则xy2-x2y的值是______.
已知正实数x,y满足xy+2x+y=4,则x+y的最小值为______.
x平方-3xy+2y平方=0 则xy分之x平方+y平方的值为()
定义运算“@”的运算法则为:x@y=xy-1,则(2@3)@4=______.
xy=-1,x+y=2,则(xy-2y)+3x+5y的值为
若实数x,y满足xy+x+y+7=0,3x+3y=9+2xy,则x2y+xy2=______.
若x+y=5,xy=6,则x2y+xy2的值为______.