Answer
$-3, 1, 5$
Work Step by Step
This question asks for ALL zeros of the function
Given $P(x) = x^3 - 3x^2 - 13x + 15$
See image below for synthetic division
So x = 1 is a zero
Factor and set P(x) = 0
$x^2 - 2x - 15$
$(x-5)(x+3)$
$x = 5, -3$
Thus the solutions are $-3, 1, 5$
