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)
((-7/5)*x^15)/28 = 0
-1/20*x^15 = 0 // : -1/20
x^15 = 0
x = 0
x = 0
| -6+v=-8 | | -10+4s=3s | | 2x^2+2x=4x-1 | | 6i+4=16 | | -13=w+12 | | 375=500t | | 11=-3(2x+3)+7x | | x^2+28=52 | | 2-(n+7)+3= | | -6x^2+24x+4=0 | | 3(2d-1)=4(2d-3)-3 | | 7(5+h)=21 | | 1=-y/4 | | 1132=16x^2 | | 4x-8+7x=-5x-6x | | -(5x-8y+7)= | | 2+3m=2 | | 16x^2+x=1132 | | 3x-6+7x=-6+4x | | 15=3(4g+1) | | 12-2x+11=13 | | 7(x-2)=126 | | 3z-10=-34 | | -0.7x+0.2x-1=-8 | | 16x^2+x+1132=0 | | 6z-2z=-5z+7+2z | | 39=p-6 | | 2(d-8)+3= | | 1=0.1x-0.5x-11 | | 5d=-36.25 | | -(d)x5/3=d+25 | | x+12527=215 |