If it's not what You are looking for type in the equation solver your own equation and let us solve it.
r in (-oo:+oo)
((r^3)/5)*r^5 = 0
1/5*r^8 = 0 // : 1/5
r^8 = 0
r = 0
r = 0
| 2x+21=4x-39 | | 20-17w=-w-19-19w | | n/16-5 | | 3(5r+2)=2(3r-6) | | (4x-8)=(3x+5) | | 11.1-7.24-8.9u=-14.17-8.6u | | 2x-8=2-4-x | | =-17 | | 2.97=1.8 | | 45m^2n^4/18m^4n^3 | | 8m+12=4(3+2m) | | 35=3x+21 | | 2x+25+5x+29=180 | | whatisxcubed+4xsquared=150 | | 5r=29 | | q-60-850= | | 18.3d=-3.3+18.1d | | 5x-7y=-4 | | 5/8=x/10 | | 4x-30=2x-20 | | 3k^4+k^2-4=0 | | 6x^2-12-28x=0 | | 9m+14= | | 2x^2-36x-136=0 | | 3x-20=1x-12 | | -8b-40=-6(1+7b) | | 3y+14=2y+6 | | (7-10)/5 | | -371=-149-6x | | 14t=-15+13t | | 7y^2-4=21 | | 14x+7=154 |