If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
2*x^3 = 0
2*x^3 = 0
2*x^3 = 0
2*x^3 = 0 // : 2
x^3 = 0
x = 0
x in (-oo:0) U (0:+oo)
8*x^6-((6*x^4)/(2*x^3)) = 0
8*x^6-3*x = 0
8*x^6-3*x = 0
x*(8*x^5-3) = 0
8*x^5 = 3 // : 8
x^5 = 3/8
x^5 = 3/8 // ^ 1/5
x = (3/8)^(1/5)
x = 0
x = 0
x in { 0}
x = (3/8)^(1/5)
| x^2-7+11.25=0 | | X+Y+X+Y+80+90=100 | | x+(x-313)=313 | | x+(313-x)=313 | | -3x^4+6x^5+9x^2= | | 6^2/2^2*3 | | 10-10x=20-8x | | 48/p=3 | | 3y-3x=15 | | 6x^2+6y^2=13xy | | 15+y=16 | | 15-20x=2x+4 | | -3y-3x=15 | | 5-4x+4=x | | -3y=6x-21 | | y=2x^2+3x+12 | | 2*(3x-1)=10 | | 5-4(x+1)=x | | 2y+6y=14 | | (2*100)16+14= | | y=x^2+3x+m | | 6x+4=62-2x | | 3x+8=7x+40 | | 3x(y+7)=15 | | x^2+y^2-50x-32y-119=0 | | 6x+x(9-x)=50 | | -2x(5x+11)= | | 2a(3+b-3x+41)= | | -12x^2-4+26x=0 | | 5(7-12x)=15-20x | | 3(29-9)=12 | | 0.25(x+4)=0.5(2x+10) |