Multiple Choice
Determine if the given square root evaluates to a real number.
11. Roots, Radicals, and Complex Numbers
Introduction to Radical Expressions
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Evaluate the following square root.
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Verified step by step guidance1
Identify the expression to evaluate: \(-\sqrt{121}\). This means you need to find the square root of 121 first, then apply the negative sign.
Recall that the square root of a number \(a\) is a value \(b\) such that \(b^2 = a\). Here, find \(b\) such that \(b^2 = 121\).
Since \$11^2 = 121\(, the square root of 121 is 11. So, \)\sqrt{121} = 11$.
Apply the negative sign in front of the square root, which gives \(-\sqrt{121} = -11\).
Therefore, the evaluated expression is \(-11\).
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