f(x)

f(x) = (-0.0125 * x^(4)) + (0.025 * x^(3)) + (0.3 * x^(2))
X = Point(xAxis)
x0: x(X)
Text1: "x = " + x0 + ""
P: (x0 | f(x0))
s = Segment(X, P)
y0: y(P)
Text3: "\violet{f(" + (LaTeX[x0]) + ") = 0}\\
\red{x = " + (LaTeX[x0]) + ": “Nullstelle”} "
N_{1}, N_{2}, N_{3} = Root(f)