I normally prefer the phrase “by using the distributive law” instead of the more colloquial “by FOIL,” but I’ll make an exception in this case.
Your Plan is Foiled
Published
I normally prefer the phrase “by using the distributive law” instead of the more colloquial “by FOIL,” but I’ll make an exception in this case.
Mean Green Math 
In the olden days we called it “expand the brackets. It made sense. The popular explanation of the distributive law is very bad, see my post on this:
https://howardat58.wordpress.com/2015/01/21/more-bad-language-in-math/