3 2 m 5 m 15 July 8, 2019 16 32 64 128 3 5m 2 5 2m m 1 15m Factor m 2 − 3 m − 5 m 15 by grouping 15/(m ^ 2) * m/5 3 5•2m 2 5 3 5 m=2 5 m 2 m 5 m 3 m 3 m 3 m