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)
1/x-3 = (6*x)/(x^2)-9 // - (6*x)/(x^2)-9
1/x-((6*x)/(x^2))-3+9 = 0
1/x-6*x^-1-3+9 = 0
-5*x^-1 = -6 // : -5
x^-1 = 6/5
-1 < 0
1/(x^1) = 6/5 // * x^1
1 = 6/5*x^1 // : 6/5
5/6 = x^1
x = 5/6
x = 5/6
| 2(s-5)=35 | | (x-8)^2/x^2-360 | | 2x+37-5x=2-7x+3 | | 112x=28 | | 15=2j | | 6xa-4=-2 | | 2x-5/2=10 | | 10=2j | | x^2+25y^2=0 | | i^77/4= | | 9y-11-5y= | | 3x=5+4X | | 145/160=x/100 | | (x+3)7=3 | | 5y-3+y+45=5y+50-3y | | 6(x+4)-(4x-7)= | | 10=2(j-5) | | 42=6i | | 5(g+3)+2=3(g+1) | | 57=25x+6 | | 20=2(j+5) | | t-37= | | (-6)2x(0.2)+(4)2x(0.5)+(14)2x(0.3)= | | -148=-1-3(6x+1) | | x^3-6x^2-18=0 | | 2(5h+2)-2G=3(2h+3)+7 | | x^3-6x^2-18= | | 2(h-3)=-6+h | | 4(8f+6)+8(-f+3)= | | 1-2/x=14/5x-1/5 | | 7g-18=2h | | 6x^2+7c+2=0 |