skylers002 skylers002
  • 20-08-2017
  • Mathematics
contestada

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

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Аноним Аноним
  • 20-08-2017
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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kmathis77
kmathis77 kmathis77
  • 20-08-2017
(x+7) (4x²+7) is the correct answer 

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