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)
4/10 = 10/X // - 10/X
4/10-(10/X) = 0
4/10-10*X^-1 = 0
-10*X^-1 = -2/5 // : -10
X^-1 = 1/25
-1 < 0
1/(X^1) = 1/25 // * X^1
1 = 1/25*X^1 // : 1/25
25 = X^1
X = 25
X = 25
| -15+7x(-8+6)-10x-4x=8x+20x-2+5-7 | | 80t^3-40t^2+5t=0 | | 64xy/72wxy | | -x=-10/12 | | y/4-y-2=-8 | | 7(c-4)+3=2+c-27 | | 7-4(x+5)+2(x-1)=5x+13-7(x+2) | | (6u+3x+2)(3u-4x)= | | 21-u=224 | | 5x+9X+10X=96 | | -6t^3+81=0 | | -2.6(5z+6)+3.9z= | | 3x+15+2x-2=5x+13 | | q=(g=1/3qa) | | g=1/3qa | | 4(u-3)-8=-6(-5u+6)-8u | | in(3x-4)=1.5 | | 114/x=.37/1.0 | | I=Ncz | | 1/4y-3x=9 | | 114,000/x=.37/1 | | 8=6x+44 | | 19x+1=21x-5 | | 21=-3/4w | | 6x+10=2(5x+1) | | 3x-49(4)=65 | | 0=8x+6 | | 7m-10m=6 | | 6(16c+4)= | | 3(5x+1)=6x+10 | | Vx=16x^2+7x+32 | | 7x^2-21x+115=0 |