Question

question
factor completely.
$4 - x^2$
answer attempt 1 out of 2

Explanation:

Step1: Identify the formula

The expression \(4 - x^2\) is a difference of squares, which follows the formula \(a^2 - b^2=(a + b)(a - b)\).

Step2: Apply the formula

Here, \(a = 2\) (since \(2^2 = 4\)) and \(b = x\) (since \(x^2\) is the square of \(x\)). Substituting into the difference of squares formula, we get \(4 - x^2=(2 + x)(2 - x)\).

Answer:

\((2 + x)(2 - x)\)