Question

Multiply (2n + 2)(2n – 2)

Answer 1

=2n^2 - 4n + 4n- 4=0

= 2n^2 -4=0

= 2n^2= 4

n^2 = 4/2

n^2 =2

n= √2

Answer 2

Here is your answer

(2n+2)(2n-2)

$\\ using \: the \: formula \: : \\ (a + b)(a - b) = {a}^{2} - {b}^{2}$

${2n}^{2} - {2}^{2} \\ 4 {n}^{2} - 4$

Hope it helps✌✌