If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(4/5)*x^90 = 0
4/5*x^90 = 0 // : 4/5
x^90 = 0
x = 0
x = 0
| 21/2+32/4 | | 6y+4+5y+8+3y+16=360 | | 3x/2=4 | | m-7m+9m-5= | | x+3y+5z=5 | | 5x+6(3)=13 | | Y=2x^2+4X+5 | | 20y^2+11x-3= | | 3z-21+5z=4-6z+17 | | 0=2x^2-6x-28 | | -3+k/5=20 | | 1=0.2x-0.6x-15 | | -25-4(1)(6)= | | 3(5)+y=17 | | x=2x^2+4X+5 | | -z(z-7)+7z^2+5= | | 4x+x+(x+6)=180 | | 1/3m=1/4 | | 35000-2.5x=0 | | 1/2(6x+2)=26 | | 5(x+2)-(2x-5)= | | 1/3m=4 | | 13x=12-2x | | (6x-6)(5x+9)=0 | | -5x-6x=8-8x-1n | | 9x+54=52 | | 4*3-3= | | -4x-5=x-60 | | 3x=-9+11 | | 4(3)-3= | | 2(6y-9)+6=3y-2 | | 9x-2x=-45 |