# How do you factor #x²+8x+7#?

##### 2 Answers

Nov 7, 2015

#### Explanation:

To quickly factor it, we want to find two numbers that add up to

You might quickly see that the numbers we want are

Next, simply write 2 pairs of parenthesis and put "

Notice if you were to FOIL this out, you would get the original expression. In fact, what we just did was FOIL-ing backwards.

Nov 7, 2015

#### Explanation:

Find two numbers that when added equal