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18 January, 17:36

Is the following sum rational or irrational? (/sqrt (8)) / (3) + / sqrt (16)

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Answers (2)
  1. 18 January, 17:41
    0
    √8

    √ (4*2)

    2√2

    Since √2 is irrational, the sum of √8 / (3) + √16 is irrational ...
  2. 18 January, 18:02
    0
    Root 8 = 2 root 2

    root 16 = 4

    so 2 root 2 / 7 = (2/7) root 2

    hence irrational
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