Question

Find the square root of 20.5209 by division method.

Answer 1

Answer:

Just like division, finding roots is a guess and subtract method.

It's based on the fact that (a+b)^2 = a^2 + 2ab + b^2

So, you guess a, work out the rest, subtract, and go again.

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Answer 2

This is the method that can be used. It will be approximately correct but not accurate.