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