# How do you evaluate #(2m - 5n ) ( 2m + 5n )#?

##### 2 Answers

#### Answer:

#### Explanation:

The 3 step method to evaluating these expressions is, you first want to distribute

Next you will want to distribute the

Finally by adding together your like terms

Hope this helps!

#### Answer:

#### Explanation:

It is important to note that you have a difference of two squares occurring as it is in the format of

Therefore, the answer is

This turns out to be

since you raise both the variable and its coefficient to the power of two.

You could also just FOIL this out, meaning you multiply the first term by the fourth term, the first term by the third term, the second term by the third term, and the second term by the fourth term. This gets you

As you can see, the two

Have a good day!