Choosing between factoring and using the quadratic formula depends on how tricky the equation is. Here’s a simple guide to help you decide:

When to Choose Factoring:

• If the quadratic can be easily factored.
  For example, $x^2 + 5x + 6$ can be factored into $(x + 2)(x + 3) = 0$.

• If the numbers are small, so you can do the math in your head.

When to Use the Quadratic Formula:

• If the quadratic is tough to factor, like $x^2 + 4x + 5$.

• If you want a sure answer, especially when the solutions aren’t whole numbers or simple fractions.

In short, if the quadratic looks easy to work with, go ahead and factor it. If it seems complicated, just use the quadratic formula!