Factor completely. 3x3 + 9x2 + x + 3
a. (3x2 + 1)(x + 3)
b. (3x + 1)(x - 1)(x + 3)
c. x(3x2 + 9x + 3)
d. x2(3x + 1)(x + 3)

A. (3x^2 + 1)(x + 3)

Step-by-step explanation:

3x3 + 9x2 + x + 3

I will factor by grouping

Factor out a 3x^2 from the first two terms

3x^2 (x+3) + (x+3)

Then factor out an x+3

(x+3)(3x^2+1)

first one is a: renaming a fraction. second one is c: de-c

step-by-step explanation:

my explanation is that these were the answers on edg : )

answer: c. is your answer

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