Mathematics · Ratio and Proportion
Find the mean proportional between (4 + √5) and (12 - 2√20).
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12√7 + √5
- 2√7 - √5
- 3√39
- 42√7 - √5✓
Correct answer
2√7 - √5
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