Factorise x² + 6x + 8

A quadratic equation is written in the form: ax² + bx + cTo factorise, we need to know what 2 numbers multiply to make ac and add to make bac= 8b=64 x 2=8 4+2 = 6We replace b for these two numbers so the equation is now: (x² + 4x )+ (2x + 8)We then factorise these broken down equations:x(x + 4) +2(x + 4)(x + 4) is repeated so we know it’s a factor, and (x + 2) is a factor