If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x^2 = 0
x^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
4*x-(108/(x^2)) = 0
4*x-108*x^-2 = 0
4*x^1-108*x^-2 = 0
(4*x^3-108*x^0)/(x^2) = 0 // * x^4
x^2*(4*x^3-108*x^0) = 0
x^2
4*x^3-108 = 0
{ 1, -1, 2, -2, 3, -3, 4, -4, 6, -6, 9, -9, 12, -12, 18, -18, 27, -27, 36, -36, 54, -54, 108, -108 }
1
x = 1
4*x^3-108 = -104
1
-1
x = -1
4*x^3-108 = -112
-1
2
x = 2
4*x^3-108 = -76
2
-2
x = -2
4*x^3-108 = -140
-2
3
x = 3
4*x^3-108 = 0
3
x-3
4*x^2+12*x+36
4*x^3-108
x-3
12*x^2-4*x^3
12*x^2-108
36*x-12*x^2
36*x-108
108-36*x
0
4*x^2+12*x+36 = 0
DELTA = 12^2-(4*4*36)
DELTA = -432
DELTA < 0
x in { 3}
x = 3
| 3/8+9/8=31/8 | | 1-x/5=9 | | 109+(-96)+(-45)+26= | | (2/9)/(5/9) | | 4(x-6)-2(x-3)+9x= | | 90-2x=43x+20 | | 42/3+(-6)= | | -3(7-3)+6= | | 3x^2-17m+14=0 | | -3(7-3x)+6= | | 3-(-2x-3)-5x+2=20 | | 36-4c-3c=20 | | 9z^4+87z^2+100=0 | | 6-m-6=7m+9-m | | 4+(-8)(-19)= | | 18x^4+24x^2-24=0 | | (x+6)(x-5)(3x-7)=0 | | 16y^2-80=0 | | 1/3x^2-7=-4 | | 75.6=7.2r | | (2x-6)(2x-6)=23 | | -27t^2-18t-3=0 | | 1.5*6= | | 5x+10-5=0 | | (-1/5)=x+(2/5) | | 6(2x-1)-4x+17=19 | | (1/3)=(1/9)n | | 9x+9-7x=-2 | | (x/-13)=-0.7 | | (x/0.7)=21 | | 1/5x1/8 | | 8=-3/w |