Question

1. $n^2 - 36$

Explanation:

Step1: Recognize difference of squares

The expression $n^2 - 36$ is a difference of two perfect squares, since $36 = 6^2$.

Step2: Apply difference of squares formula

Use the identity $a^2 - b^2 = (a+b)(a-b)$, where $a = n$ and $b = 6$.
$n^2 - 6^2 = (n+6)(n-6)$

Answer:

$(n+6)(n-6)$