Question

(iv) (3 - 2x) (3 + 2x) (9 + 4x2)​

Answer 1

Answer:

see the attached pic for solution

Answer 2

Answer:

{(3)2-(2x)2] (9+4x2)

(9-4x2) (9+4×2)

(9) 2-(4x2)2

81-16x4