Hi everyone, I am at University and having to do Algebra as part of one of my modules. I have a test coming up in the next few weeks and I am trying to revise for it.

I need to know how to solve quadratic equations. The example I have is... x² + 3x - 6 = 0

I have tried looking through my notes and books but can't seem to get my head around it! Can anyone break it down for me to help me understand?

Thanks in advance!