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Factoring: Special Cases Part II - Problem 5 312 views

Often, four term polynomials can be cut in half and factored by grouping. Keep the sign with the third term in the second half of the split. Make sure that the binomial factor is exactly the same on both halves- including the positive and negative signs. You'll know ahead of time if you can factor by grouping in the product of the first and fourth term is the same as the product of the second and third terms.

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