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Question
Evaluate : (2a − 3b) (3a + 4b)
Sum
Solution
(2a − 3b) (3a + 4b)
= 2a (3a + 4b) − 3b (3a + 4b)
= 6a2 + 8ab − 9ab − 12b2
= 6a2 − ab − 12b2
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Product of Sum and Difference of Two Terms
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