# How do you factor #(x-1)^2 - 4#?

##### 2 Answers

May 12, 2018

#### Explanation:

Factor out:

Factor:

May 12, 2018

#### Explanation:

Expression

To factorise the expression we could first expand the first term. However, in this case, notice that the expression is the difference of two squares.

Expression

Remember the common identity:

Thus, Expression