3.2. When to use it: When you have a trinomial (three terms) where the first and last terms are perfect squares, and the middle term is twice the product of their square roots. 4.2.1.1. Factoring by ...

A former X Factor contestant has announced her father has died just 11 months after her mother in the lead up to Christmas. Emma Chawner, 35, first appeared on the ITV talent competition in 2007.