f(x) = `(x^2-4) | x^3 - 6 x^2 + 11x + 6|+x/(1+|x|) ` is not diffrentiable at how many points ?

If f(x) = 2x^3 + 3x^2 + 11x + 6 , then f(1) is :

if f(x)=(x^2-4)|(x^3-6x^2+11x-6)|+x/(1+|x|) then set of points at which the function if non differentiable is

x^(3)+6x^(2)+11x+6

x^(3)+6x^(2)+11x+6

f(x)=(x^(2)-4)|(x^(3)-6x^(2)+11x-6)|+(x)/(1+|x|) then set of points at which the function if non differentiable is

x^(3)-6x^(2)+11x-6=0

If P(x)= x^3- 6x^2 + 11x-1 then find: p(x)-p(1)

If P(x)= x^3- 6x^2 + 11x-1 then find: p(x)-p(2)

If P(x)= x^3- 6x^2 + 11x-1 then find: p(x)-p(3)