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^-7 = 0
x = 0
x = 0
x^-7 = 0
x^-7 = 0
1*x^-7 = 0 // : 1
x^-7 = 0
x naleu017Cy do O
x in (-oo:0) U (0:+oo)
(x^4)/(x^-7) = 0
1*x^11 = 0 // : 1
x^11 = 0
x = 0
x in { 0}
x belongs to the empty set
| 2w+7=29 | | -2t-6=14 | | -3b+2=-22 | | -5b-2=-42 | | -2+4d=-26 | | 6n+7=49 | | -4-7n=-11 | | 8-6x=-62 | | 20x^2=x+1 | | 5t+1=61 | | -10+5m=-60 | | -6k+8=-52 | | 2k-1=-1 | | -4+2k=-4 | | 6t+6=-12 | | 20x^2=x+2 | | -3w+10=-11 | | 7t-1=27 | | 10+3a=22 | | 5a+1=-19 | | -5b-4=-64 | | -1+6d=29 | | -3+2x=-x+5 | | 2-2a=2 | | -5a+6=21 | | 5m+8=43 | | 4b+9=53 | | -5w+6=-24 | | 3b+5=-28 | | 3-2[5-3.5]= | | -3k+4=-17 | | -4a+2=-42 |