1. Factorise $x^2 - 6x + 8$.
We look for two numbers that multiply to $8$ and add to $-6$. These are $-4$ and $-2$.
So, $$x^2 - 6x + 8 = (x - 4)(x - 2).$$
Factorise Quadratic 73E087
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.