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^4 = 0
x^4 = 0
x^4 = 0
1*x^4 = 0 // : 1
x^4 = 0
x = 0
x in (-oo:0) U (0:+oo)
(25*x^6)/(x^4) = 0
25*x^2 = 0 // : 25
x^2 = 0
x = 0
x in { 0}
x belongs to the empty set
| 0.5(3z+6)+6.6=0.6(3z-4) | | X=9/20-1/5x | | 6x+3x-9=20x+11 | | xy-8x+4y-32= | | (x^2)-(4*y^2)-8*x-24*y-24=0 | | -7(x+9)+671=22+19 | | 7(z-3)=-u-11 | | 2(3.3y+10)+y=25 | | xy+2x+3y+6= | | -2x*3=-21 | | x=7+5(-4.5) | | -6(1-2v)+5v=-108 | | (x^2)+6x=0 | | 6x+30-18=4(x+4) | | 2(3w-8)=-38 | | -2x*6=-24 | | 7z=14 | | X(Z-250)=0 | | -3(x^2)-6x-3=0 | | 6g-5g= | | -6+4(1-3x)=-62 | | 6x+(-3x+1)=-2 | | (10(x)^-2/a)^-3 | | .3x-y=3 | | -44-3w=8w+33 | | 35=100-0.02 | | t=2-2[2t-3(1-5)] | | y^3-1=0 | | y=100-0.02(2700) | | X(Z-250)=Y(Z-200) | | 2(x^2)+5x+3=0 | | -9x+6x-9=21 |