If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( s )
s = 0
s = 0
s = 0
s in (-oo:0) U (0:+oo)
-9/s = 3 // - 3
-9/s-3 = 0
-9*s^-1 = 3 // : -9
s^-1 = -1/3
-1 < 0
1/(s^1) = -1/3 // * s^1
1 = -1/3*s^1 // : -1/3
-3 = s^1
s = -3
s = -3
| 5(g)=2.479g | | 3-2+n=210 | | 1-.9x-.34x^2+.336x^3=0 | | x^2(48-8x)= | | 2d+-11d=9 | | n+7n=48 | | 1x^2+1x=0 | | (-i)+(8i)+(-5+4i)=0 | | 0=w^2+11w+28 | | 2.7q-1.8-5.7q=-4.0q-1.3 | | x+14+2x+27=11 | | -24x^2+96x=0 | | 3p-9=6 | | 13=7+2u | | h(x)=-16x^2+5x+105 | | 7x-7y=77 | | e^6x+7e^3x-18=0 | | log(4x)=3.4 | | 2x^3-5x=2 | | 7x+112=15x+48 | | 9k^2+26k=0 | | 4x+7=3x-2kg | | 6-2n=15 | | x/165000=(x-120000)/115000 | | 4x-2(3x-4)+4=x+3(x+1)+1 | | 10+2x-16=6+x | | x(3)-216=0 | | X^3+10x^2+169x=0 | | 4u^2+3=8u | | 7t^2+8t+1=0 | | 20=-7w+5(w+6) | | 86=5x-10 |