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)
96/x+4 = x // - x
96/x-x+4 = 0
96*x^-1-1*x^1+4*x^0 = 0
(4*x^1-1*x^2+96*x^0)/(x^1) = 0 // * x^2
x^1*(4*x^1-1*x^2+96*x^0) = 0
x^1
4*x-x^2+96 = 0
4*x-x^2+96 = 0
DELTA = 4^2-(-1*4*96)
DELTA = 400
DELTA > 0
x = (400^(1/2)-4)/(-1*2) or x = (-400^(1/2)-4)/(-1*2)
x = -8 or x = 12
x in { -8, 12}
x in { -8, 12 }
| 7x-13-4x=5x-6 | | 4m+3n+7m+9n= | | -15-4x=6--3x | | 2+1/2y=3x+4 | | y+10=-4/3(x+2) | | -4-1=8-3x+4x | | 9*x=40 | | 2x-8=40-4x | | X+3+6x=-11 | | X+2*X*2=48 | | (-a+2)+9=6 | | 10x-9=9k+10 | | x+7/x=3/2 | | 3+10= | | 3x^4+42x^3+152x^2+70x+245=0 | | (2x-3/12)+x=(2x+3/2)+6 | | -16t^2+31t+3=0 | | 1.05p/1.05=84/1.05 | | x/6=x-2/5 | | 10x^3-13x^2-3x=0 | | (6f)=-2 | | 2-(3x-4)= | | (31/3)/3 | | 5n^2-n+4=10 | | 1(3x+3y)=1(-45) | | n+25+2=16 | | 5n^2-n+4=0 | | 12x+4y=14 | | 3-7=-2(x+4)-12 | | 1(3x+3y)=1(-4) | | (p-3)=10 | | y+10=-4/3x-4/3 |