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)
500 = (8*x)/x-x^2-8 // - (8*x)/x-x^2-8
x^2-((8*x)/x)+8+500 = 0
x^2-8+8+500 = 0
1*x^2 = -500 // : 1
x^2 = -500
x belongs to the empty set
| 7(-3y+5)= | | 18+7a=-8(4-4a) | | f[x]=4.8E^2x | | 6x^2+4x-480=0 | | 5x=x^2-2x | | 2x-4y+28=0 | | 6x-(1+3x)=-1+3x | | z/3-z/4=24 | | 8+6x=2x+36 | | -7(x-1)=-3x+7 | | -y+3x=4 | | (3x+1)*27= | | 3(1+x)+6x=48 | | 2x+11=3x-6 | | 6x+1=9x-26 | | 15x+4(3-5x)=2[4x-.3(x-6)-12]-7x | | 14x+2y=24 | | 14+2x=-5(-6x)+6 | | 7x-6=3x-18 | | -3(6x+8)+4(x-8)= | | -30=-5/3x | | 5w-11=3(w+3) | | 2(6-20n)=20(2n-3) | | 8-5(x-4)=2x-6 | | -2y=-10/9 | | 7/8w=-35 | | p^0n^5/p^2n^3 | | -4+b=15 | | 3x9/4 | | -5y/3=35 | | 12x-2(5x+4)-3(2x-1)=2[x-2(2x+1)] | | 3a-3=-6+3a |