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If line segments AB and CD have lengths of 10 + 7 and 5 − 7 respective

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Math Expert
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Joined: 02 Sep 2009
Posts: 55803
If line segments AB and CD have lengths of 10 + 7 and 5 − 7 respective  [#permalink]

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New post 24 Dec 2018, 23:49
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

84% (00:55) correct 16% (00:53) wrong based on 42 sessions

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Location: India
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If line segments AB and CD have lengths of 10 + 7 and 5 − 7 respective  [#permalink]

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New post 25 Dec 2018, 08:12
Bunuel wrote:
If line segments AB and CD have lengths of \(10 + \sqrt{7}\) and \(5 − \sqrt{7}\) respectively, AB is greater than CD by how much?


A. \(5 − 2\sqrt{7}\)

B. \(5 + 2\sqrt{7}\)

C. \(15 + 2\sqrt{7}\)

D. 5

E. 15



\(10 + \sqrt{7}\) - ( \(5 − \sqrt{7}\))

\(5 + 2\sqrt{7}\)

IMO B
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If line segments AB and CD have lengths of 10 + 7 and 5 − 7 respective   [#permalink] 25 Dec 2018, 08:12
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If line segments AB and CD have lengths of 10 + 7 and 5 − 7 respective

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