p(x)=ax^3+bx^2+cx+d

e = 1.2 (slider from -5 to 5, step 0.1)
d = 4 (slider from -5 to 5, step 0.1)
c = -3 (slider from -5 to 5, step 0.1)
b = -2 (slider from -5 to 5, step 0.1)
a = 1 (slider from -5 to 5, step 0.1)
p(x) = a * x^(4.0) + b * x^(3.0) + c * x^(2.0) + d * x + e
texto2: "p(x)=" + p