Learn and revise how to solve quadratic equations by factorising, completing the square and using the quadratic formula with Bitesize GCSE Maths Eduqas.

Thus the information here given enables cubic and quartic equations to be solved as easily (to an accuracy of say two significant figures) as quadratic equations are accuracy can be improved by ...

The estimation of quadratic functions of a multivariate normal mean is an inferential problem which, while being simple to state and often encountered in practice, leads to surprising complications ...