Question

What's the expansion of α²-β²? Thanks

Answer 1

`(alpha+beta)(alpha-beta)`

Explanation:

Recall that we have a difference of squares of the form

`bar( ul|color(white)(2/2)(a^2-b^2)=(a+b)(a-b)color(white)(2/2)|)`

Immediately recognizing this, we can replace the As and Bs with the Alpha and Beta, and we get

`(alpha+beta)(alpha-beta)`

Hope this helps!