已知x+4y=-1,xy=5,求(6xy+7y)+【8x-(5xy-y+6x)】的值
已知x+4y=-1,xy=5,求(6xy+7y)+【8x-(5xy-y+6x)】的值
化简求值:已知x+4y=-1,xy=5,求(6xy+7y)+【8x-(5xy-y+6x)】的值
已知x+4y=-1,xy=5,求(6xy+7y)+{8x-5xy-y+6x)}的值
已知x+4y=-1.xy=5.求代数式(6xy+7y)+[8x-(5xy-y+6x)]的值,
已知x+y=3,xy=1,求代数式5xy+4x+7y+6x-3xy-4xy+3y的值.
1.已知x+4y=-1 xy=5 求(6xy+7y)+[8x-(5xy-y-6x)]的值
已知x+4y= ﹣1,xy=5 ,求代数式(6xy+7y)+[8x-(5xy-y+6x)]的值.
已知X+Y=6,XY=-4,求(5X-4Y-3XY)-(8X-Y+2XY)的值
1.已知x+y=-4,xy=3,求5(2分之1xy+2y)+[6x-(2xy+y-3x)]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xy^2=-6,求-xy(x^3y^7-3x^2y^5-y)的值