Question 76656: Multiply. (4m-3n)(4m+3n)
I am trying to multiply this and I can't seem to, I am not sure what I am doing wrong and need some help. Thanks so much.
Answer by stargrl12566(16)   (Show Source):
You can put this solution on YOUR website! To multiply this, you have to FOIL which means First Outer Inner Last
Here's how it goes:
First 4m^2
Outer 12mn
Inner -12mn
Last -9n^2
Combine like terms and you get the answer
4m^2+12mn-12mn-9n^2
4m^2-9n^2
That method is for multiplying any two binomials together, If you have two binomials that are the same except for the sign in the middle, you can just multiply the First and Last terms and still get the same answer. As you can see, the middle two terms are subtracted out.
|
|
|
