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10 June, 23:35

Find the square root of 7-2√5

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Answers (2)
  1. 10 June, 23:48
    0
    Answer:√5 - √2

    Step-by-step explanation:

    = √ (5 + 2 - 2√10)

    = √{ (√5) ² + (√2) ² - 2.√5.√2}

    = √ (√5 - √2) ² (by identity a² + b² - 2ab = (a-b) ²)

    = √5 - √2
  2. 11 June, 00:04
    0
    5√5 = 11.8033989 or - 2√5+7
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