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5 July, 06:09

What is the square root of 81?

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Answers (2)
  1. 5 July, 06:46
    0
    Let say 81=x.

    The square root of x is a number*the same number=x.

    In our case, - 8 and 8 works. But, because this question asks just for the square root, we use the principal root which is just 9.

    9 is your answer.
  2. 5 July, 07:02
    0
    The answer is 9. That is because 9 x 9 is 81
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