Answer:
(4a + 2)3
Explanation:
(4a + 2)(4a + 2)(4a + 2) multliply first two with FOIL
(16a2 +16a + 4)(4a + 2) multiply these using distributive
16a2(4a) + 16a(4a) + 4(4a) + 16a2(2) + 16a(2) + 4(2)
64a3 + 64a2 + 16a + 32a2 + 32a + 8
64a3 + 96a2 + 48a + 8