SOLUTION: 4x^2-81
Algebra.Com
Question 153260: 4x^2-81
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Do you want to factor this?
Start with the given expression.
Rewrite as .
Rewrite as .
Notice how we have a difference of squares. So let's use the difference of squares formula to factor the expression:
Factor the expression using the difference of squares.
So factors to .
In other words .