f(x)=|x^3-2x^2-8x|-3

g(x)=x³-2x²-8x

g(x)=x^3-2x^2-8x

f(x) = abs(x^(3.0) - 2.0 * x^(2.0) - 8.0 * x) - 3.0
h(x) = -7.0 * x + 33.0
A = Intersect(h, f, (2.9999999697513964, 12.000000211740225))
g(x) = x^(3.0) - 2.0 * x^(2.0) - 8.0 * x