Perfect Square Trinomials

b = 3 (slider from -10 to 10, step 1)
c: b^(2) / 4
f(x) = x^(2) + (b * x) + c
text1: "f(x)=" + (LaTeX[f]) + ""
A = Intersect(f, xAxis, 1)
text2 = FractionText(c)