Steve and Malinda asked the following question: "A friend's kid got stuck on this one question and we're not sure what the answer is now! 'factorise 2n + 4'" That's easy! Factorising means "taking out a common thing" really, in this case a common factor. So 2n has in common with 4... the number 2.
Factorising together: 2n + 4 = 2(n+2) Job done!
