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What is the solution of -2a plus 3a plus 5b
(2a + b)(a + 3b)
3a + 2a = 5a
2A plus 3B times 2A - 3B = 4A2 - 9B2; this is an example of the general formula (a + b)(a - b) = a2 - b2.
-4 + 10 + 6a - 2a + 3 9 + 4a