Answer:
B. (x + 3) (x + 27)
Step-by-step explanation:
To factor the expression, you must split the middle term (18x) into two terms that can be added to get 18, and multiplied to get 81:
[tex]x^2 + 18x + 81[/tex]
[tex]x^2 +3x + 27x + 81[/tex]
Group:
[tex](x^2 +3x) (27x + 81)[/tex]
Take out GCF (Greates Common Factor):
x(x + 3) 27(x + 3)
(x + 27) (x + 3)
