Respuesta :

6y6

4 • (2a + 3) • (2a - 3)

(1): "a2" was replaced by "a^2".

24a2 - 36

3.1 Pull out like factors :

16a2 - 36 = 4 • (4a2 - 9)

3.2 Factoring: 4a2 - 9