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 = 0
x = 0
x in (-oo:0) U (0:+oo)
2/3 = -6/x // + -6/x
2/3-(-6/x) = 0
6*x^-1+2/3 = 0
6*x^-1 = -2/3 // : 6
x^-1 = -1/9
-1 < 0
1/(x^1) = -1/9 // * x^1
1 = -1/9*x^1 // : -1/9
-9 = x^1
x = -9
x = -9
| 3/4;0.75 | | 6x+5=2x+23 | | 8+4(2u-2)=-2(6u-5)+5u | | 5(9x-8)+14x= | | -18x-11=-22x+15 | | 2z-6+2= | | 3x-3(-x-19)=27 | | six=3/2 | | -4x-8=-12x+6 | | 2z-6+4= | | 4z/9-1=6 | | -9(v+7)=7v+17 | | -3x^2+120x= | | 2z+6+2= | | 8z-0.8=9z | | cos(45)=1.5/x | | F(x+8)=3x-8 | | (2+z)-(2+3)+2= | | 7u-48=-8(u-9) | | 2k^2+10k+12=0 | | -4x-10=-5x-1 | | 5x+2(-2x+12)=17 | | .5x^2-2.5x-1.25=0 | | log16x=1/4 | | -4(x-7)=-8x+20 | | -24-(-6)=x/11 | | -8(n-5)=-7n-2 | | 2(z-3)+2= | | 6t-3+3t=6-3t+3t | | 2y+93=7y-37 | | 3v-13=38 | | -12=2+3v |