Trinôme - Forme factorisée
Author: Yvan Monka - m@ths et tiques 2013

a = 0.4 (slider from -10 to 10, step 0.1)
x_1 = 0.8 (slider from -20 to 20, step 0.1)
x_2 = -4.6 (slider from -20 to 20, step 0.1)
texte1: "" + x_1 + ""
texte2: "" + x_2 + ""
f(x) = a * (x - x_1) * (x - x_2)
A = Intersect(f, xAxis, 1)
B = Intersect(f, xAxis, 2)