Question

please tell me the correct answer of this question

Answer 1

On putting x = -1, rem = 0 which means that -1 is one of the zeroes. So by factor theorem x+1 is a factor of the given equation.

On dividing (x^3 - 3x^{2} - 9x - 5)/(x+1)= x^2 - 4x - 5 = (x+1)*(x-5)

So x = -1, -1, 5