Question 1018297
1. You didn't provide the example that this person named Huan used. However difference of squares could be applied with non-square numbers, e.g.


*[tex \large 1 = 3-2 = (\sqrt{3})^2 - (\sqrt{2})^2 = (\sqrt{3} - \sqrt{2})(\sqrt{3} + \sqrt{2})]


2. Distributive property?