# How do you simplify #7m ^ { 2} n + 4m ^ { 2} n ^ { 2} - 4m ^ { 2} n#?

##### 1 Answer

#### Explanation:

In this expression, there are no common integers, but there are variables that are common to each element that can be grouped together to avoid writing them multiple times. That is what is meant by simplifying the expression.

It is easy to see that

From:

We now have:

Resulting in:

If you want to check the answer, choose some numbers for

If