The diagram represents the factorization of a2+8a+12.

A 2-column table with 2 rows. First column is labeled a with entries a squared, 2 a. Second column is question mark with entries 6 a, 12. First row is labeled a with entries a squared, 6 a. Second row is labeled 2 with entries 2 a, 12.
sorry, it won't let me use the picture.
What is the missing number that will complete the factorization?

A. 6
B. 8
C. 12
D. 24

Pease hurry i'm on a timed test! :(

2 answers

a^2 + 8 a + 12 = (a + 6) (a + 2)
the actual answer is 6