1 Answer | Add Yours
The trick to this problem is to know what to multiply first.
Difference if square rule states: `(x-y)(x+y)=(x^2-y^2)`
Keeping that in mind, we will work from left to right in order to apply this rule few times without having to do a lot of work.
We’ve answered 317,736 questions. We can answer yours, too.Ask a question