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)
10/x = (10/9)*x+1 // - (10/9)*x+1
10/x-((10/9)*x)-1 = 0
(-10/9)*x+10/x-1 = 0
10*x^-1-10/9*x^1-1*x^0 = 0
(10*x^0-10/9*x^2-1*x^1)/(x^1) = 0 // * x^2
x^1*(10*x^0-10/9*x^2-1*x^1) = 0
x^1
(-10/9)*x^2-x+10 = 0
(-10/9)*x^2-x+10 = 0
DELTA = (-1)^2-(4*10*(-10/9))
DELTA = 409/9
DELTA > 0
x = ((409/9)^(1/2)+1)/(2*(-10/9)) or x = (1-(409/9)^(1/2))/(2*(-10/9))
x = -9/20*((409/9)^(1/2)+1) or x = -9/20*(1-(409/9)^(1/2))
x in { -9/20*((409/9)^(1/2)+1), -9/20*(1-(409/9)^(1/2))}
x in { -9/20*((409/9)^(1/2)+1), -9/20*(1-(409/9)^(1/2)) }
| 6x^2-12=144 | | 12-9x=51-16x | | 36=7x-6 | | x^2+72x-720=0 | | 10v+20=170 | | x-7=6-(x-3) | | x^2+72x+720=0 | | tan(2x)=x | | 76-6x=7x-8x | | T=2m+2m | | 7x-4-3x=2+4x-6 | | 86-4x=32x+18 | | x^3+x-4=0 | | (6+3)+4= | | x^4-2x^3-3x^2+4x+4=0 | | 3-3(x-2)=n | | x^3-3x^2=15 | | 5x+5+x=65 | | (8-10)+12= | | x/0.5*(-1.86)=-20 | | -4*3+4y=12 | | x^3=0.216 | | x^3=0.512 | | 8-x+1=4x-1-7x | | 3*4+4y=12 | | 10x^2-17xy+35y^2=a | | 1/3(10x-6)=7 | | 7-4d+12=23 | | 6-4d+12=23 | | 2(y-9)=4y-18 | | 1/3=-2x/5 | | 25.2=703w/75^2 |