117k views
2 votes
Factor completely 4x3 + 28x2 + 7x + 49.

A. (x − 7)(4x2 + 7)
B. (x − 7)(4x2 − 7)
C. (x + 7)(4x2 + 7)
D. (x + 7)(4x2 − 7)

User Brinxmat
by
7.9k points

2 Answers

5 votes

Answer:

(x + 7)(4x2 + 7)

Explanation:

User Peter Bushnell
by
8.3k points
1 vote
*Hint: Look at the last family operation that is used for you to factor more easily.

Since the last variable is a positive, it means that the factors have only positive numbers since a positive times a positive equals a positive number. Only two positives can equal a positive.

Therefore, the answer is C.
User Martin Preusse
by
8.2k points