객관식
Evaluate the radical.
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0. Fundamental Concepts of Algebra
Radical Expressions
객관식
Evaluate the radical.
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No real solution (Imaginary)
검증된 단계별 안내1
First, understand that the expression involves evaluating a square root of a squared number: \( \sqrt{(-5)^2} \).
Calculate \((-5)^2\). When you square a negative number, the result is positive. So, \((-5)^2 = 25\).
Now, substitute the result back into the square root: \( \sqrt{25} \).
The square root of 25 is 5, because 5 multiplied by itself gives 25.
Therefore, the expression \( \sqrt{(-5)^2} \) simplifies to 5, which is a real number.
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