Find the Zeros Of $Q(r)=2 r-15+r^{2}$ By Factoring $\mathrm{B}$ ", With $\mathrm{A}<\mathrm{B}$

Find the zeros of $Q(r)=2 r-15+r^{2}$ by factoring. List the answers in the form "A, $\mathrm{B}$ ", with $\mathrm{A}<\mathrm{B}$ .