Question

Select the factors of $a^2+7a+10$.

• A. 1
• B. a+1
• C. 2
• D. a+2

Answer 1

Answer: (A), (D)

The correct options are
A

1

D

a+2

$a^2+7a+10=a^2+5a+2a+10=a(a+5)+2(a+5)=(a+2)(a+5)$

Thus, the factors of $a^2+7a+10$ are $(a+2)$ and $(a+5)$.