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13 March, 10:39

R 3.5

Mellom hvilke to hele tall ligger kvadratroten til

a) 35

b) 67

c) 93

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Answers (1)
  1. 13 March, 13:43
    0
    a) 5, 6

    b) 8, 9

    c) 9, 10

    Step-by-step explanation:

    It is useful to know the squares of small integers:

    5² = 25

    6² = 36

    7² = 49

    8² = 64

    9² = 81

    10² = 100

    Then the problem becomes one of identifying the perfect squares the given number lies between

    a) 25 < 35 < 36 ⇒ 5 < √35 < 6

    b) 64 < 67 < 81 ⇒ 8 < √67 < 9

    c) 81 < 93 < 100 ⇒ 9 < √93 < 10
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