# Do I need to complete the square if #f(x) = x^2 - 6x + 9#?

##### 1 Answer

Sep 13, 2014

You have several options when solving quadratic equations. With this particular problem you could ...

- Graph it
- Use Quadratic Formula
- Factor

Completing the square is not needed here because the equation is already a perfect square trinomial. If you were to complete the square at the end of the process you would have the same exact equation.

Add 9 to both sides

I would have just used the factoring method.

I need the factors of