(2x-3y)²-4x+6y+5=0
已知x-y=1,y≠0,求{(x+2y)²+(2x+y)(x+4y)-3(x+y)(x-y)}÷y的值.
x²+y²-4x+6y+13=0,求(3x+y)²-3(3x+y)(x+y)-(x-3y)
(2/3x-2/x+y(x+y/3x-x-y))÷x-y/x,其中5x+3y=0
(2x-3y)²-4x+6y+5=0
(3x-2)²+2x-y-3的绝对值=0,求5(2x-y)-2(6x-2y+2)+(4x-3y-2分之1)
若4x+3y+5=0,则3(8y-x)-5(x+6y-2)的值是多少?
y=5;x=14;y=((x=3*y,x+6),x-1); printf(''x=%d,y=%d'
如果X的平方+Y的平方-4X-2Y+5=0,求(根X-根Y)的平方+4×根X×根Y/X+根X×根Y的值
计算:(1)2/(x+y)+4y/x²-y²(2)x²/x+y-x+y
已知x和y满足x+3y+|3x-y|=19,2x+y=6,求x,y的值
x(x-y)-y(y-x)+(x-y)²因式分解
已知:‖2x+3y+5‖+(3x+2y-25)²=0,求x,y的值·