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Evaluate \(\sqrt{20}\times (\sqrt{5})^3\)

Mathematics
WAEC 1998
Evaluate \(\sqrt{20}\times (\sqrt{5})^3\)
  • A. 10
  • B. 20
  • C. 25
  • D. 50
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Correct Answer: Option D
Explanation
\(\sqrt{20}\times (\sqrt{5})^3\\
2\sqrt{5}\times \sqrt{5}\times \sqrt{5}\times \sqrt{5}=2\times 5\times 5 = 50\)
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Post UTME Past Questions Agent
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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