Answer
$(y+12)(y-1)$
Work Step by Step
The leading coefficient of the given trinomial is 1.
This means that it can be factored by looking for factors of the constant term (-12) whose sum is equal to the numerical coefficient of the middle term (11).
Note that $-12=(12)(-1)$ and that $12 + (-1) = 11$, the numerical coefficient of the middle term.
The factors of $-12$ whose sum is $11$ are $12$ and $-1$.
Therefore the factored form of the given trinomial is:
$=(y+12)(y-1)$
