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Gabrielle Paul
Mathematics
1 October, 02:11
Factor completely 4x3 + 28x2 + 7x + 49.
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Ortiz
1 October, 02:14
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Try grouping in paires
4x^3 + 28x^2 + 7x + 49
= 4x^2 (x + 7) + 7 (x + 7) - note that (x + 7) is common to the 2 parts, so
= (4x^2 + 7) (x + 7)
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Harmon
1 October, 02:40
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(x+7) (4x²+7) is the correct answer
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