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)
((-12*a)/100)*x^3 = 8 // - 8
((-12*a)/100)*x^3-8 = 0
-3/25*a*x^3 = 8 // : -3/25*a
x^3 = -200/3*a^-1
x^3 = -200/3*a^-1 // ^ 1/3
x = -(200/3)^(1/3)*a^(-1/3)
x = -(200/3)^(1/3)*a^(-1/3)
| 255/68 | | 4x^3+x^2-15x-6=0 | | 17*5*3/68 | | ax+4=y | | X/(5x-1)=(3,2)/(14,4) | | 5x(6-6x)=49 | | 0.7x=x | | X/5x-1=3,2/14,4 | | secx=4cosx | | 6y-19=-7 | | 16x^3+7x^2+3x=415 | | 5u=8u-63 | | 3f+9f=60 | | -2(r+5)-3=5 | | 5(s+11)=35 | | (w+6)(w+1)=0 | | 17*2x=1-2x | | 2r^2-6r+12-4R= | | (3-5s)(-3+5s)=0 | | 7r^3-35r^2+6r-30= | | X+5=3-10 | | 44-y=25-2(8-3y)0 | | 2m^3+4m^2+6m+-2= | | Logic=7 | | 4b^3-6b^2+10b-15= | | 6x^3+4x^2+3x+2= | | (x^4)-(3*x^2)+1=0 | | 4/7*3/8 | | 4(x-3)-x(y+2)= | | x^3-3x=17 | | 7-8(2a+3)= | | 2x^2+x^2=144*3 |