The quadratic formula is the preferred general method and I believe the best one. If you know the formula is will always work along with your application in applying. I prefer using this method, it allows the finding of complex and real solutions.
Completing the square, to me, is the most difficult method. Applying this method is difficult for me to remember. Completing the square was derived from the quadratic formula and I don’t see a reason to use it as long as you are knowledgeable of the quadratic formula.
Factoring is the easiest method solving integer solutions. The quickest way of solving the problem would be splitting up the starting equation into the factoring pair.
The quadratic formula is the preferred general method and I believe the best one. If you know the f