The factor by grouping method found the GCF’s of the original polynomial to be “5x” and “+6.”

When you factor those out, you have this remaining:

5x(x + 3) + 6(x + 3).

What is the final answer?

Group of answer choices

(x + 3)(30x)

(x + 3)(5x + 6)

(x + 3)(11x)

Prime