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*x-(25/(x^2))-9 = 0
2*x-25*x^-2-9 = 0
2*x^1-25*x^-2-9*x^0 = 0
(2*x^3-9*x^2-25*x^0)/(x^2) = 0 // * x^4
x^2*(2*x^3-9*x^2-25*x^0) = 0
x^2
2*x^3-9*x^2-25 = 0
{ 1, -1, 5, -5, 25, -25 }
1
x = 1
2*x^3-9*x^2-25 = -32
1
-1
x = -1
2*x^3-9*x^2-25 = -36
-1
5
x = 5
2*x^3-9*x^2-25 = 0
5
x-5
2*x^2+x+5
2*x^3-9*x^2-25
x-5
10*x^2-2*x^3
x^2-25
5*x-x^2
5*x-25
25-5*x
0
2*x^2+x+5 = 0
DELTA = 1^2-(2*4*5)
DELTA = -39
DELTA < 0
x in { 5}
x = 5
| 5+2y=5 | | -5w+4=24 | | n/3=10/5 | | V-8.46=3.2 | | f(x)=x^2-19x+70 | | 5v-15=70 | | 6(-1/3)-5=7 | | 4x-1.5(-3)=0.5 | | 4(-2.5)-1.5y=0.5 | | 16+3s=66 | | 3584-1312=32(112x-41) | | 16x=-72x-81 | | 4x+24x-8=7(4x+1) | | f(x)=x^3+12x^2+48x+64 | | 9x+11=-4x-16 | | 4(5x+5)=20x-6 | | 2x=3x-18 | | 5.5+2.2a=18 | | 9(5a-7)/18=9(a-1)/3 | | 9(5a-7)/18 | | 6(3)+2y=5 | | 6(2)+2y=5 | | 3x^5+xy-2y=0 | | x+5=513 | | 15e-2=5 | | j+14=2j-20 | | 6x+2(4)=5 | | -3(g-2)=8 | | 6(4)+2y=5 | | 2mn-3m+8n-12=(m+4)(x-3) | | 4x-10+3x=40-3x | | 3x+40=5x+20 |