Grouping for Factoring: Group the terms into two pairs to prepare for factoring by grouping.Group the first two terms and the last two terms separately.15x3+10x2−9x−6 can be grouped as (15x3+10x2)+(−9x−6).
Factor out GCF: Factor out the greatest common factor from each group.From the first group, factor out 5x2, and from the second group, factor out −3.5x2(3x+2)−3(3x+2).
Common Binomial Factor: Check if there is a common binomial factor in both groups.Both groups have a common binomial factor of (3x+2).
Factor out Binomial Factor: Factor out the common binomial factor.The factored form is (3x+2)(5x2−3).