Question

unit 7 review assignment
topic 2: simplifying polynomials

1. (n + 2)(n - 2)

Explanation:

Step1: Identify the formula

The expression \((n + 2)(n - 2)\) is a difference of squares, which follows the formula \((a + b)(a - b)=a^2 - b^2\). Here, \(a = n\) and \(b = 2\).

Step2: Apply the formula

Substitute \(a = n\) and \(b = 2\) into the formula: \(n^2 - 2^2\).

Step3: Simplify the result

Calculate \(2^2 = 4\), so the simplified form is \(n^2 - 4\).

Answer:

\(n^2 - 4\)