# How do you evaluate #(1+ 2v ) ( 1- 2v )#?

##### 3 Answers

May 20, 2018

Is a notable identity

May 20, 2018

#### Explanation:

Tip: Remember this Algebraic Identity called the difference of squares:

sub in

May 20, 2018

#### Explanation:

Here,

So plug that in and you get

Which is equal to