Mathematics · Ratio and Proportion
What is the mean proportional between (11 + 5√2) and (9 - 5√2)?
- 1√(49 - 10√2)✓
- 2√(59 - 5√2)
- 3√(40 - 10√2)
- 4√(35 - 5√2)
Correct answer
√(49 - 10√2)
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