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Rewrite the middle term as the sumof two terms and then factor completely.
Please show me the formula and how to use it correctly.
12w^2 + 19w + 4

19w can be written as 16w + 3w. Those are the cross product terms when multiplying 4w times 4 and 3w times 1. That is a clue that the polynomial can be factored as
(4w + 1)(3w + 4)

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