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^3-16 = 0
x^3-16 = 0
x^3-16 = 0
1*x^3 = 16 // : 1
x^3 = 16
x^3 = 16 // ^ 1/3
x = 2*2^(1/3)
x in (-oo:2*2^(1/3)) U (2*2^(1/3):+oo)
(x^2-(8*x)+16)/(x^3-16) = 0
(x^2-8*x+16)/(x^3-16) = 0
x^2-8*x+16 = 0
x^2-8*x+16 = 0
DELTA = (-8)^2-(1*4*16)
DELTA = 0
x = 8/(1*2)
x = 4 or x = 4
(x-4)^2 = 0
((x-4)^2)/(x^3-16) = 0
x-4 = 0 // + 4
x = 4
x in { 4, 4 }
| -2=-13-x | | 1/3(x-6)=-4 | | x*(y+4)-3*(y+4)=19 | | 5-3x=(2x+1)/3 | | 4x+2=-6+2x+12 | | 14=5/8p+4 | | 14=5/8+4 | | 12a^2b+4ab=0 | | 10/3=5-z | | 3a-(a-x)=2b(x+3) | | 15b^2-32b+14=0 | | n^2-11n=-30 | | 5(5-y)=5 | | ((9x^2)^7/2)(9^(-5/2))(x^-8) | | Y=0.2+5 | | -3x+3=-3 | | 4-3n=n-8 | | 2x^2-4x-k=0 | | 2x^2-4x=k | | 9x^2+12x+154=0 | | e^2t+3=19 | | 5.00/12.00d=40 | | 12x=48-4x | | y=4(15)-2 | | 7(x+(1)/(x))-2(x^2+(1)/(x^2))=9 | | 9/5p-9=0 | | y=4(-5)-2 | | -7i(3-4i)= | | y=4(-6)-2 | | 60/5/2 | | 60+2/1/2 | | -5.4412p^2+35.9486p+1.1834=0 |