If it's not what You are looking for type in the equation solver your own equation and let us solve it.
u in (-oo:+oo)
(4/25)*u^5-((3/20)*u^4) = 0
(4/25)*u^5+(-3/20)*u^4 = 0
4/25*u^5-3/20*u^4 = 0
1/5*u^4*(4/5*u-3/4) = 0
4/5*u-3/4 = 0 // + 3/4
4/5*u = 3/4 // : 4/5
u = 3/4/4/5
u = 15/16
(u^4)/5 = 0
1/5*u^4 = 0 // : 1/5
u^4 = 0
u = 0
u in { 15/16, 0 }
| -7x+9=-3x+13 | | -2x-14=-5x-5 | | 6=4+4 | | Y+3.1=4.3 | | 6=9+4 | | 14z-7+8z=180 | | -30x+36=30 | | n^2+2n+np+2p=0 | | X-1.2=6.6 | | 8=-9x-1 | | 3j^2+11j+6=0 | | 3/16x^8-2/12x^7 | | 25timesx-36=-114 | | x-300=250 | | 7-x=8-(-7) | | 5(x+8)=5(x+9) | | 1/8•3/11 | | 5-3x/4=8 | | 8+a=72 | | 4(x+8)=4(x+13) | | r+15.4=21.6 | | 10(x+8)=10(x+15) | | 12t*21=-36 | | A=2.5+-0.5b | | x-90=30 | | 16x+4*4x+3=0 | | x-35=100 | | -23=12+4f | | E(n)=2.5n | | je^3a-4=24 | | 7y-(-8)=36 | | 0=-2x-3y |