A cubic function is given as f (x) = x^3 +2x^2-5x-6 and if (x + 1) is factor, determine the x-intercepts of the function
a little synthetic division yields
x^3 +2x^2-5x-6 = (x+1)(x^2+x-6) = (x+1)(x+3)(x-2)
x^3 +2x^2-5x-6 = (x+1)(x^2+x-6) = (x+1)(x+3)(x-2)