Work Step by Step
The leading coefficient of the given trinomial is 1. Thus, it can be factored by looking for the factors of the constant term ($-48$) whose sum is equal to the numerical coefficient of the middle term ($13$). Note that $-48=-3(16)$ and $-3+16=13$. Thus, the given trinomial can be factored as $(x-3)(x+16)$. Therefore, the term of the second factor is $+16$.