X= (10101)2 ,Y=(21)8 ,Z=(20)10 ,W=(17)16 ,这四个数由小到大的排列顺序是
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x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
{6(x-y)-7(x+y)=21 {2(x-y)-5(x+y)=-1
12y(x-y)^2-8(x-y)^3=?
X^2-Y^2+6X+10Y-30=0 X^2+Y^2-5X-8Y+21=0 X=?Y=?
(x+2y)(x-2y)-(2y-x)(-2x-y)其中x=8,y=-8
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=?
[(x+2y)(x-2y)-(x-2y)^2+8y(x+y)]除以4x=
已知X*X+Y*Y+6X-8Y+25=0 求(Y/X)+(X/Y)-2=?
x*x+2x-y*y+6y-8=0,x+y不等于2,求x-y的值
已知x+y/y=11/8,求x-y/x+2y的值.
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian
9y=3x-(x-1),4(x+y)-(2x+4)=8y
[(2x-y)^2-y(y-4x)-8x]其中x=-1/2
3x-2y=9 x-3y=2 x+y=5 x+2y=3 y=x 2x+y=8
已知x+y/x=11/8,求x-y/x+2y的值
【x+_2y】[x-2y]-[2x-y][-2x-y]x=8 y=-8