skylers002
skylers002
20-08-2017
Mathematics
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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
20-08-2017
(x+7) (4x²+7) is the correct answer
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