Evaluate the following square root.
$-\sqrt{121}$

• A. $11i$
• B. $11$
• C. $-11$
• D. $-10$

Answer: (C)

Verified step by step guidance

1. Identify the expression to evaluate: \(-\sqrt{121}\). This means you need to find the square root of 121 first, then apply the negative sign.
2. Recall that the square root of a number \(a\) is a value \(b\) such that \(b^2 = a\). Here, find \(b\) such that \(b^2 = 121\).
3. Since \$11^2 = 121$, the square root of 121 is 11. So, \(\sqrt{121} = 11\).
4. Apply the negative sign in front of the square root, which gives \(-\sqrt{121} = -11\).
5. Therefore, the evaluated expression is \(-11\).