Answer:
ASSUMING IT IS SIMPLIFICATION.....
[tex]2a(7a - 3b)[/tex]
Step-by-step explanation:
[tex] {6a}^{2} + 2a(4a + 3b) - 12ab[/tex]
Expand the bracket.
[tex] {6a}^{2} + {8a}^{2} + 6ab - 12ab[/tex]
[tex] {14a}^{2} - 6ab[/tex]
Take the common factors out.
[tex]2a(7a - 3b)[/tex]
