2 years ago

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

2 answers:

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]2 years ago

6 0

(x+7) (4x²+7) is the correct answer

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