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*x+1 = 5/x+2 // - 5/x+2
2*x-(5/x)-2+1 = 0
2*x-5*x^-1-2+1 = 0
2*x^1-5*x^-1-1*x^0 = 0
(2*x^2-1*x^1-5*x^0)/(x^1) = 0 // * x^2
x^1*(2*x^2-1*x^1-5*x^0) = 0
x^1
2*x^2-x-5 = 0
2*x^2-x-5 = 0
DELTA = (-1)^2-(-5*2*4)
DELTA = 41
DELTA > 0
x = (41^(1/2)+1)/(2*2) or x = (1-41^(1/2))/(2*2)
x = (41^(1/2)+1)/4 or x = (1-41^(1/2))/4
x in { (1-41^(1/2))/4, (41^(1/2)+1)/4}
x in { (1-41^(1/2))/4, (41^(1/2)+1)/4 }
| 17w-3.12=-58.2 | | 4y=8x-11 | | e+7/e-1/e-4/e+9 | | 8-6x=22+x | | 3x^2-1x-1=0 | | 3x^2-1-1=0 | | 45x=20 | | 2/3x=13/12 | | x=1500+0.8*x | | [4(x+2)-3]-[7-2(x-3)]= | | n^2-n-156=0 | | x^4+x^2-1x^2-1=0 | | 8x+2y-x-5y= | | 4x-8y+16= | | 0=40x^2-80x-3200 | | -4(3x-4y+1)= | | -2/3(-6/7) | | 12-2[4-(-6+10)5]= | | 81c^2-18cp+p^2=0 | | 50/7*5/7 | | 9/2(6*8/4)= | | 81c^2+p^2-18cp=0 | | 10x+11y=51 | | 1/5a-2=18 | | 4x^3-3x=0 | | w^3+10w^2+25w=0 | | x^6+4x^5-2x^4+3x^3-23x^2+3x-3=0 | | x^6+4x^5+2x^4+3x^3+23x^2+3x-3=0 | | 2/3z+5=25 | | 25b^2+60bt+36t^2=0 | | 6-x+3/x=2/3 | | -3z^5w^2-18z^3w^4= |