Factor completely 3x2 + 5x + 1.
(3x + 1)(x + 1)
(3x + 5)(x + 1)
(3x − 5)(x + 1)
prime

(D)

Step-by-step explanation:

The quadratic equation is in the form :

and In the above, (p + q) = b and pq = c.

To factor a quadratic, we'll need to start by finding the two numbers (being the p and the q above) that add up to equal b, where those numbers also multiply to equal c.

Since, both 3 and 5 in the given equation are prime numbers, thus the given equation cannot be factorised because of the prime nature.

Hence, option D is correct.

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