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elena-14-01-66 [18.8K]
3 years ago
8

Factor completely 4x3 + 28x2 + 7x + 49.

Mathematics
2 answers:
umka21 [38]3 years ago
7 0
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)
Rasek [7]3 years ago
6 0
(x+7) (4x²+7) is the correct answer 

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