If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( z )
z = 0
z = 0
z = 0
z in (-oo:0) U (0:+oo)
10/z+4 = 1/3 // - 1/3
10/z-(1/3)+4 = 0
10/z-1/3+4 = 0
10*z^-1 = -11/3 // : 10
z^-1 = -11/30
-1 < 0
1/(z^1) = -11/30 // * z^1
1 = -11/30*z^1 // : -11/30
-30/11 = z^1
z = -30/11
z = -30/11
| 2x^4+54=0 | | 16x^2+5x+6=0 | | 18t^2+4t^3= | | x+7=41 | | x+y+xy=4 | | h^3-100h=0 | | t=120+20w | | 0.30(24)+0.05x=0.15(6+x) | | 900/11=a | | 7(7-6x)= | | 6x+1/5=-30+2x+1/3 | | 2r/3+3=4 | | 4n-40=7(-2n-2) | | 8k-6=10k+12 | | 3w+4u+9+2w+5u+1= | | 12p+7=-15+6.5 | | 3b^2+18b=0 | | 510/6.5=a | | 16x=8x-1 | | 3(2x-3)= | | X-(-15)=-3 | | 23.25/18.6=f | | 5x+6=x+12 | | f(x)=log(x-1)+2 | | w^4-625=0 | | 2/5F=18 | | 23.25/18.6 | | 2a^2-2b^2=0 | | 15x+10y=125 | | 6m^4-6=0 | | 5x+5y/20 | | 18.56/14.5=a |