若|x-1|+|2x+4y|=0,求3x-2y

若x^5+x^4y+x^4+x+y+1=0,且3x+2y=1,求x,y的值 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 若|x-1|+|2x+4y|=0,求3x-2y x²-4x-1=0,求(2x-3)²-(x+y)(x-y)-y² 若2x-3y+4=0则x（x*x-1)+x(5-x*x)-6y+7 1、若x>-1,求y=x+1/x+1的最小值,并求对应的x的值 2、y=x²+4/x(x>0),求y的最小值3、若x>=0,求y=x²+x+2/x+1的最小值4、求y=x(9-3x)的最大值(0 计算(1) (x+y)(-x-y)(x+y)² (2) (-1/3x²y³)³(3) 若x²+3x-2=0,求2x³+6x²-4x+2的值 求值域 1,y=(x+2)/(x*x+3x+6) 2,y=3x/(x*x+4) 若2x-3y=0,求5x+4y/3x-2y 3x+4y-5=0 x^2+y^2=1求x.y 若(-x+6):(x-y):(4x+y)=3:14:1,求x+y 若(-x+6):(x-y):(4x+y)=3:14:1,求x+y 若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*y)的值 若|x-y|+|2x-4|=2x-4且|x+y-1|=0求x, 求值域:y=(x^2+1)/[x(x-4/3)],(x>0) 若(2x-y-1)2+|x-2y-3|=0,求代数式(2x+y)(2x-y)-(x+2y)(x-2y-1)的值若(2x-y-1)²+|x-2y-3|=0,求代数式(2x+y)(2x-y)-(x+2y)(x-2y-1)的值 若有理数x、y、z满足等式(x-1)^2+(2x-y)^4+|x-3z|=0,求x、y、z的值 若｜y+5｜+(5x+1)2=0,求-3(2x-y)-｛7x-[6x+2y-(10x-8y)]-x-2(3x-4y)｝的值