若x-y=5,-xy=3,求(7x+4y+xy)-6(六分之五y+x-xy)的值.
若X-Y=5,-XY=3,求(7X+4Y+XY)-6(六分之五Y+X-XY)的值
若x-y=5,-xy=3,求(7x+4y+xy)-6(六分之五y+x-xy)的值.
已知x-y=4xy,求x-2xy-y分之2x+3xy-2y的值!
x-y=3,xy=5,求代数式(7xy+4x-7y)+(6x-3xy)-(3y+4xy)的值
已知X+Y=6,xy=3求代数式(5XY+4X+7Y)+(6X-3XY)-(4XY-3Y)的值
已知x+y=3,xy=1,求代数式5xy+4x+7y+6x-3xy-4xy+3y的值.
x+y=8,xy=-2,求(5xy+4x+7y)+(6x-3xy)-(4xy-3y)的值
1.已知x+y=-4,xy=3,求5(2分之1xy+2y)+[6x-(2xy+y-3x)]的值
若x-y=5,-xy=3,求(7x+4y+xy)-6(5/6y+x-xy)的值
若x-y=5,-xy=3,求(7x+4y+xy)-6(5/6·y+x-xy)的值
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
xy分之x+ y=4,求代数式4x+4y分之5xy-6xy分之2x+2y的值