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Question
Expand the following:
(3x + 4) (2x - 1)
Sum
Solution
(3x + 4) (2x - 1)
= 6x2 - 3x + 8x - 4
= 6x2 + 5x - 4
(Using identity : (x+ a) (x -b)
= x2 + (a - b) x - ab).
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