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 = 0
X = 0
X = 0
X in (-oo:0) U (0:+oo)
(27*X^5)/X = 0
27*X^4 = 0 // : 27
X^4 = 0
X = 0
X in { 0}
X belongs to the empty set
| (6-7i)(8+9i)=0 | | 4cos(3x-(x/2)) | | 10y+18=4(2y+7) | | 3z-1=8z-11 | | 7a=3(a-2) | | 130/150=x/180 | | (6-7x)(8+9x)=0 | | 19/x=152/4 | | 0.16+x=10 | | 23+3y-2=13y-9-4y | | [5x+0.9lnx]8= | | X+18+4x=-16-4x-20 | | -(4x+-6)=18 | | 18000/52 | | -7=b-(7) | | 2=x(1-(x/10)) | | 4n-19=n+5 | | Y=x^3-6.25x | | 0.02/1=x/3 | | 396x+30(9)-49=23x+50045-64x | | 2(a+m)=5m-3+a | | 901x-13x=9 | | 658-2x=29-3x+4 | | 8x-400=30000-78x+203 | | 4x+3y=8.08 | | 3000x+-55-2x=175+99x | | y=14x-6x^2 | | 11x-45=-94 | | 12+9x(3x)=90 | | 60x-23(3)=1000-90x | | 6x+1=2x+12 | | 6-4x=-24 |