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

Annie Qu, Bruce G. Lindsay, Bing Li, Improving Generalised Estimating Equations Using Quadratic Inference Functions, Biometrika, Vol. 87, No. 4 (Dec., 2000), pp. 823-836 ...

But how do you come up with a function to fit data? The basic idea is to create a quadratic function and vary the parameters such that the deviation of the actual data from the function is minimized.

Quadratic equations are polynomials, meaning strings of math terms. An expression like “x + 4” is a polynomial. They can have one or many variables in any combination, and the magnitude of them is ...

The quadratic formula learned by generations of math students is difficult to remember, but it can be used to solve quadratic equations where y = 0.