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)
(X^2)/(x^4) = 0
X^2*x^-4 = 0 // : X^2
x^-4 = 0
x naleu017Cy do O
x belongs to the empty set
| (8x)^-1/3 | | 6(x+1)/4=5x-2 | | -8(x-8)=9(x-5) | | 4^2-4(-3)/2 | | 5(2x+6)=3(3x+2) | | -6x3x/8 | | 8(x+8)-2x=6(x-8)+6 | | 7/8-7/10 | | (5x-6)(x-9)=(x+1)(1-6x) | | 4(x+3)-6=6+4x | | (13x-6)(13x-6)=117 | | (7x-8)(x-5)=(x-4)(8x-7) | | (x^8-3x^7)+(-x^6+3x^5)=0 | | (x+9)(x-2)=(x-1)(x+3) | | x-(-4+3x)=-8 | | 3x-(1/2)=2x+(7/4) | | 1/2=*/4 | | 1/2=*3 | | 16-4x-6=2x-x | | 49x^2+35x+6=0 | | x^4+6x^3=9x^2+54x | | x+(x+2)+(x+4)=189 | | 5(x+4)+(x-5)=10 | | (x^4+6x^3)+(-9x^2-54x)=0 | | 6z+z=-7z-9+2z | | 2.50x+39.99=1.75x+50.00 | | 6+16x-1=9x+93-4x | | -18+3=-5(x+2) | | -9=-7z-6(2z+1) | | 4x+22=40 | | -6z+4z=9z+2+5z | | 250x+39.99=1.75x+50.00 |