How do you factor the expression 8a + 24?

Mar 5, 2016

$8 \left(a + 3\right)$

Explanation:

Given:$\text{ } \textcolor{b l u e}{8} a + \textcolor{m a \ge n t a}{24}$

You look for a number than can be divided into both 8 and 24

$\textcolor{b l u e}{8 \times 1 = 8}$
$\textcolor{m a \ge n t a}{8 \times 3 = 24}$

$8 \left(\textcolor{b l u e}{1} a + \textcolor{m a \ge n t a}{3}\right)$

But $1 \times a = a$

$8 \left(a + 3\right)$