Agreed.Brackev said:I've an engineering degree and they never once mentioned FOIL. The question maker needs to be taken outside and publicly floged. The question is invalid due to FOIL not being a mathmatical operation.
Referring to expanding as "FOIL" would mean you couldn't expand anything beyond two terms per bracket set and two sets of brackets.
For example, it's impossible to apply the concept of "FOILing" to (x + 2y + 5z)[sup]2[/sup] or (x + 3)[sup]3[/sup] when it's not actaully any harder to expand those things provided you understand the concept of expanding brackets, rather than just learn a rule like FOIL.