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^2 = 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 = 50/(x^2) // - 50/(x^2)
2-(50/(x^2)) = 0
2-50*x^-2 = 0
-50*x^-2 = -2 // : -50
x^-2 = 1/25
-2 < 0
1/(x^2) = 1/25 // * x^2
1 = 1/25*x^2 // : 1/25
25 = x^2
x^2 = 25 // ^ 1/2
abs(x) = 5
x = 5 or x = -5
x in { 5, -5 }
| -2=8v-6 | | 1=8v-6 | | 4=8v-6 | | 17/5×35 | | y=3/5x-12;y=1/3x-8 | | -3=8v-6 | | Y=63+5 | | 1/2(b | | -6=2y+1 | | 1/5-3i | | 27(x+18)=11x-5 | | 3x+5.52=74.52 | | 7-35=x | | 7x-4=-4+20 | | 18x+11y=20 | | 12x+by+c=0 | | 15x+8y=10 | | -29-n=6 | | 5x+11y=10 | | 9+2t=3 | | Y=35-7 | | -3=-16t^2+25t | | 3(2x+8)=-2x | | 19x+14y=16 | | 9p+(2+p)=-18 | | 3x+16y=12 | | -2x+y=65 | | (2x+8)=-2x | | q=89-.50[89-.50q] | | -58=4p-10 | | Tanx=-7 | | 3(2x-8)=-2x |