X=2 Y=4 Do x=x*y y=y+1 Loop While y

x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 X=2 Y=4 Do x=x*y y=y+1 Loop While y (x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)= (x-4y)(2x+y)= 化简 x / y(x+y) - y / x(x+y) = x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空 y+y'-2y=2x 微分方程y - 2y' + y = x 4x方y/(x-2y)(x+2y)怎么算[x方/x-2y]-4x方y/(x-2y)(x+2y)=? x=1 y=2 do x=x*y y=y+1 loop while y y'=（y/x）^2+y/x+4微分方程 x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=? x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=? 2x-y=2,求[(x²+y²)-(x-y)²+2y(x-y)]÷4y x*x+2x+y*y-4y+5=0 x= y= 如果|X|=4 |Y|=2 且|X+Y|=X+Y 求X+Y {3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1 3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2