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14 May, 05:59

What is the square root of - 16?

0-81

041

OO

+3
Answers (1)
  1. 14 May, 06:18
    0
    Answer: 4 i

    Finding square roots of of numbers that aren't perfect squares without a calculator.

    Example: Calculate the square root of 10 () to 2 decimal places.

    Find the two perfect square numbers it lies between.

    Divide 10 by 3.

    Average 3.33 and 3. ( ...

    Repeat step 2: 10/3.1667 = 3.1579.
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