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)
3-(1/x)-(3/(x^2)) = 0
3-x^-1-3*x^-2 = 0
t_1 = x^-1
3-3*t_1^2-1*t_1^1 = 0
3-3*t_1^2-t_1 = 0
DELTA = (-1)^2-(-3*3*4)
DELTA = 37
DELTA > 0
t_1 = (37^(1/2)+1)/(-3*2) or t_1 = (1-37^(1/2))/(-3*2)
t_1 = (37^(1/2)+1)/(-6) or t_1 = (1-37^(1/2))/(-6)
t_1 = (37^(1/2)+1)/(-6)
x^-1-((37^(1/2)+1)/(-6)) = 0
1*x^-1 = (37^(1/2)+1)/(-6) // : 1
x^-1 = (37^(1/2)+1)/(-6)
-1 < 0
1/(x^1) = (37^(1/2)+1)/(-6) // * x^1
1 = ((37^(1/2)+1)/(-6))*x^1 // : (37^(1/2)+1)/(-6)
-6*(37^(1/2)+1)^-1 = x^1
x = -6*(37^(1/2)+1)^-1
t_1 = (1-37^(1/2))/(-6)
x^-1-((1-37^(1/2))/(-6)) = 0
1*x^-1 = (1-37^(1/2))/(-6) // : 1
x^-1 = (1-37^(1/2))/(-6)
-1 < 0
1/(x^1) = (1-37^(1/2))/(-6) // * x^1
1 = ((1-37^(1/2))/(-6))*x^1 // : (1-37^(1/2))/(-6)
-6*(1-37^(1/2))^-1 = x^1
x = -6*(1-37^(1/2))^-1
x in { -6*(37^(1/2)+1)^-1, -6*(1-37^(1/2))^-1 }
| 3x+8(3x-4)=7x-17 | | 4(1+5k)+3=87 | | 3y^2(4y^2+5y-4)= | | 25/5x=90/4x | | 8-(3z-2)=7-4z | | -6(2-5b)=-132 | | (((1/a)-1/7))/a-7) | | 26=6-5w | | 15v^7-24v^5)/3v^3 | | -6(2-5b)=132 | | 4(x+7)+4=8x-4(x-6) | | 3x+y+4x-2y+20=180 | | 137.9944=4*3.14*r^2 | | n=2n+2 | | 5cos(2x)+7=2 | | 7c=.75 | | log(37-4x)=0 | | -8d-5d/7d=72 | | 9x-8=3x-29 | | 3x+1=7.5 | | -1(n-6)-8=-1(1+n) | | -8(v+3)+3v+5=6V+10 | | 204=-4(5-8k) | | 4n^2=2n | | 7(1-4p)=-161 | | 2a^2(4a^2-2a-6)= | | 5z-18=62 | | 3x(2)-6=-45 | | -8(1+4a)=88 | | 4+3(5x-5)=5-3(2x+1) | | X+1+51=90 | | 1/6d=12 |