德望學校 – S2數學 2B Chapter 10 Rational and Irrational Numbers – CQ (13-18)

試卷答案:

1. a) 2
   b) \(\dfrac{7\sqrt{6}}{12}\)
2. \(\dfrac{5\sqrt{6}}{2}\)
3. a) 33
   b) \(\dfrac{\sqrt{2}}{80}\)
4. \(\dfrac{9\sqrt{7}}{7}\)
5. a) \(-\sqrt{35}\)
   b) any correct answers, e.g. \(-\sqrt{2}\) and \(-\sqrt{8}\)
6. ABC is a straight line.
7. \(\dfrac{3\sqrt{6}}{4}\)
8. a) \(\sqrt{5}\)
   b) \(18\sqrt{35}\)

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