f(x)=

x4 = 1 (slider from -5 to 5, step 1)
x1 = -1 (slider from -5 to 5, step 1)
x2 = 0 (slider from -5 to 5, step 1)
x3 = 2 (slider from -5 to 5, step 1)
a = 1 (slider from -5 to 5, step 0.1)
f(x) = a * (x - x1) * (x - x2) * (x - x3) * (x - x4)
fausmult = Simplify(f)
g = Factor(fausmult)
A, B, C, D = Root(f)
Text1 = Text(g)