f(x) =

Nullstellen:

f(x) = (((-1 / 10 * (x - 1)) * (x + 2)) * (x + 5))
Eingabefeld1 = Textfield(f)
L: {x = -5, x = -2, x = 1}
Text1: " " + (LaTeX[L]) + ""
N = Sequence(Intersect[Element[L, i], xAxis], i, 1, Length[L])
f0 = Expand(f(x))
Text2: "= " + (LaTeX[f0]) + ""