Question
Find the root of \( \sqrt[5]{-3125} \). Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. \( \sqrt[5]{-3125}=\square \) (Simplify your answer.) B. The root is not a real number.
Ask by Dunn Campbell. in the United States
Mar 13,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The root of \( \sqrt[5]{-3125} \) is \(-5\).
Solution
We start with the expression:
\[
\sqrt[5]{-3125}
\]
Since the index \(5\) is odd, the \(5\)th root of a negative number is also negative. In other words, we have:
\[
\sqrt[5]{-3125} = -\sqrt[5]{3125}
\]
Next, we simplify \(\sqrt[5]{3125}\). Notice that:
\[
3125 = 5^5
\]
Thus, we can write:
\[
\sqrt[5]{3125} = \sqrt[5]{5^5} = 5
\]
Substituting this back, we get:
\[
\sqrt[5]{-3125} = -5
\]
So, the correct choice is:
A. \(\sqrt[5]{-3125}=-5\)
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Extra Insights
A. \( \sqrt[5]{-3125} = -5 \) To simplify this, we notice that \(-3125\) can be rewritten as \(-5^5\). Hence, when we take the fifth root, we get \(-5\). It's as easy as pie!