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^2 = 0
x = 0
x = 0
x^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
2/x-(3/(x^2))-3 = 0
2/x-3*x^-2-3 = 0
2*x^-1-3*x^-2-3 = 0
t_1 = x^-1
2*t_1^1-3*t_1^2-3 = 0
2*t_1-3*t_1^2-3 = 0
DELTA = 2^2-(-3*(-3)*4)
DELTA = -32
DELTA < 0
x belongs to the empty set
| 12=4x-7-3x | | (1/2x)(1/6)=75 | | f(x)=10x+6y | | 10284+3186= | | -7=a-5 | | 2b^2+b=15 | | 1x+6y=-8 | | -3+x=-18 | | 4x-27=6 | | 2(x-6)=x+-14 | | -2(3d+5)= | | k(3)=13k-2 | | 3(5y+1)=(3-5y) | | 5=35/w,w≠0 | | 8-x=11-2x | | -133+(-19)= | | 7=z/4 | | 5.2=-0.7y | | (3-x)(3-x)+4x^2+19=0 | | 12z-7-9(z-2)=z+35 | | 3(2x+3)=4x-5 | | 4*2.5+7y=3 | | 2t+8t+3t-8= | | 25/20= | | x^3-2x^2+x-30=3x^2+10x-75 | | 300=4x+4 | | x^2-4=53 | | -8+3x=6x-44 | | 5x-23+x+4y=180 | | 8X=2X+1+6X-1 | | 4x+7(14-6x)=3 | | x+(x+24)=66 |