How to Factorise Quadratic Expressions of the form ax^2+bx+c - No Guesswork!

How can we factorise a quadratic expression of the form ax^2 + bx + c without using any guesswork? Easy enough when a=1, but for any other integer a, this gets tricky and will usually involve some trial and error in finding the factors. This quick method allows you to factorise quadratics quickly and easily without the need for trial and error. Great for GCSE maths practice . . . #gcsemaths #factorise #quadraticequation #quadratic #maths