As my daughter enters the sixth form, it's a relief to know that she's dropped those subjects that she found particularly challenging, in her case Maths and Science. Not only does it mean less ...

Using the quadratic formula is another method of solving quadratic equations that will not factorise. You will need to learn this formula, as well as understanding how to use it.

Many former algebra students have painful memories of struggling to memorize the quadratic formula. A new way to derive it, overlooked for 4,000 years, is so simple it eliminates the need.