f(x) = x(squared) + kx + (k+3) where k is a constant. Given that the equation f(x) = 0 has qual roots..

A) Find the possible values of k

B) Solve f(x) = 0 for each possible value of k

Given instead that k = 8

C) Express f(x) in the form (x + a)squared + b, where a and b are constants.

D) Solve f(x) = 0 giving your answers in surd form