If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
y = 8/x-2 // - 8/x-2
y-(8/x)+2 = 0
y-8*x^-1+2 = 0
-8*x^-1 = -(y+2) // : -8
x^-1 = (y+2)/8
-1 < 0
1/(x^1) = (y+2)/8 // * x^1
1 = x^1*((y+2)/8) // : (y+2)/8
8*(y+2)^-1 = x^1
x = 8*(y+2)^-1
x = 8*(y+2)^-1
| 2*2-3/5 | | 4v^2=8 | | 1.2k+2.3=-5k+7.4 | | 2v+9-6v=19 | | log(7)=log(13) | | (x-4)(2x-7)=0 | | 3-5x/6=9x-7/4 | | 5n+an=8b | | -[3]x+5y=-19 | | 3(2-3m)=-8m+5 | | 6x-7=-9x+13 | | x-15=2x-22 | | 21-5x=5-9x | | -x^4+4*x^2+6*x+1=0 | | -2y+6x=-10 | | 7/8x-5/8=9 | | 5x+75=3x+105 | | ln^4+ln(x-1)=0 | | 6-5a=-19 | | 4(x+6)-7=-23 | | 3x+7=106 | | 5/y=y-2/3 | | 4+11x=-36+x | | 5/y=y-821st/3 | | 2x-5y=32 | | 4x^3+x^2-3x=2 | | 5(x+8)=180 | | 0.5x-0.5=0.75+1-x | | 42+5y=82 | | -2/30(6x-27)=-4 | | 25-18r=-11 | | x/5=4-x/3 |