Solve the following quadratic by factoring.
x2+6x+8

(x+2)(x+4)

Explanation:

Factoring means we want something like
(x+_)(x+_)
Which numbers go in the blanks?

We need two numbers that...
Add together to get 6
Multiply together to get 8
Can you think of the two numbers?

Try 2 and 4:
2+4 = 6
2*4 = 8

Fill in the blanks in
(x+_)(x+_)
with 2 and 4 to get...
(x+2)(x+4)

(x+2)(x+4)