Let f be a differentiable function satisfying
f(x) = 1 – 2x +

f(t) dt, x ∈
R and let g(x) =

(t – 4)
6 (t + 12)
17 dt, x ∈
R.
If p and q are respectively the points of local minima and local maxima of g, then the value of |p + q| is equal to _________ .