x_3=5

p = 1.8 (slider from 0 to 5, step 0.1)
f(x) = (((1 / 10 * (x - p)) * (x + p)) * (x - 5))
szöveg1: "f(x)=\frac{1}{10}(x-" + (LaTeX[p]) + ")(x+" + (LaTeX[p]) + ")(x-5)"
szöveg2: "x_1=-" + (LaTeX[p]) + ""
szöveg3: "x_2=" + (LaTeX[p]) + ""
A: (p; 0)
B: ((-p); 0)
C = (5, 0)