(2a-3b) (2a+3b)
(2a-b) (2a+3b)
(2a-3b) (a+3b)
(a-3b) (a+3b)
Correct answer is A
Check:
(2a-3b) (2a+3b)
4a2 + 6ab - 6ab - 9b2
4a2 - 9b2
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