Look at the National 4 factorising section before continuing. When a question asks you to 'solve' a quadratic equation, this means that you are to find the roots of the quadratic. In other words ...

The quadratic formula can be used to solve quadratic equations that will not factorise. You will need to learn this formula, as well as understanding how to use it. Key fact The quadratic formula ...

After all, people have been solving that equation for about 4,000 years. But that’s exactly what he did. Before we look at the new solution, let’s talk about why you want to solve quadratic ...