If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
-8*x^6 = 0
-8*x^6 = 0
-8*x^6 = 0
-8*x^6 = 0 // : -8
x^6 = 0
x = 0
x in (-oo:0) U (0:+oo)
(9*x^8)/(-8*x^6) = 0
-9/8*x^2 = 0 // : -9/8
x^2 = 0
x = 0
x in { 0}
x belongs to the empty set
| 2w+3+6=2 | | 30k+60=20k+100 | | N/30=5/25 | | 2/4=n/20 | | 4x(-6.2)= | | 2(2k-1)=4k-8 | | 24=-5-6 | | (7x+8)(7x+8)=10 | | 15+3m-8=21-m | | -12-10x=8 | | 12x^2-21x^3=0 | | 5w-6/3+2=5 | | -2(x-2)-5x=8-3x | | 3w-3=2w-6 | | 2/12=n/42 | | 5(x+2)-3=3x(x-1)-9x | | 20t-5t=-30 | | 15n=0 | | 200m-75m+58500=60600-175m | | 3x-2(x+4)=6x-9 | | (.10+15)=(.15c+10) | | 20t-5t=50 | | 7x-4=-2x+1+9x-(-5) | | 5/6y-3/4y=-3 | | 75-0.6x=201 | | (.10c-15)=(.15c-10) | | Y=7y-24 | | 25m=25 | | X^2=2x-65 | | x^27-64y^21= | | 13/2(3+7) | | 8+x=4+.2x |