Question

Express as a mixed surd in lowest form $\sqrt[5]{515625}$

• A. $5\sqrt[5]{515}$
• B. $5\sqrt[5]{55}$
• C. $15\sqrt[5]{55}$
• D. $25\sqrt[5]{55}$

Answer 1

Answer: (B)

$5\sqrt[5]{55}$

$\sqrt[5]{515625}=\sqrt[5]{55\times 5^5}=5\sqrt[5]{55}$