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17 November, 06:22

What's the square root 20

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Answers (1)
  1. 17 November, 08:18
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    by using calculator, these are the answers:

    √20 = 4.47213595499958

    √18 = 4.24264068711928

    but without calculator,

    √20 = √ (4x5)

    = √4 x √5

    = 2 x √5

    = 2√5

    √18 = √ (9x2)

    = √9 x √2

    = 3 x √2

    = 3√2
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