12m2+11m-15

Factor 11 out of 11m.

12m2+11(m)-15

Rewrite 11 as -9 plus 20

12m2+(-9+20)m-15

Apply the distributive property.

12m2-9m+20m-15

12m2-9m+20m-15

Group the first two terms and the last two terms.

(12m2-9m)+20m-15

Factor out the greatest common factor (GCF) from each group.

3m(4m-3)+5(4m-3)

3m(4m-3)+5(4m-3)

Factor the polynomial by factoring out the greatest common factor, 4m-3.

(4m-3)(3m+5)

Factor 12m^2+11m-15