Factor by grouping.x3 + 4x + x2 + 4

A. (x2 + 1)(4x + 1)
B. (x2 + 4)(x + 1)
C. (x2 + 1)(x + 4)
D. (4x + 1)(x + 1)


Answer: B

Mathematics

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A. b6
B.
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