Answer
$(w-6)(w-7)$
Work Step by Step
The first term in each binomial must be w, since $w^2$ has no coefficient.
The operation in each binomial must be subtraction, since the trinomial has a positive and a negative term.
$-6+(-7)=-13$ and $-6\times(-7)=42$, so the other two terms are -6 and -7.
