Question

(2n + 2)(2n – 2

possible answers:
4n2 – 4
4n2 – 4n – 4
4n2 + 2n – 4
4n2 + 4n – 4

help?

Answer 1

Related to an identity:

\(\Large \color{Black}{\Rightarrow (a + b)(a - b) = a^2 - b^2}\)