Factor.
\[
4-x^{2}
\]

Answer

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Answer

The factored form of the expression \(4 - x^{2}\) is \(\boxed{(2 - x)(2 + x)}\).

Steps

Step 1 ：This is a difference of squares problem. The difference of squares formula is a^2 - b^2 = (a - b)(a + b). In this case, a is 2 and b is x.

Step 2 ：So, we can rewrite the expression as (2 - x)(2 + x).

Step 3 ：The factored form of the expression \(4 - x^{2}\) is \(\boxed{(2 - x)(2 + x)}\).