How do you find the square root of a number that doesn’t have a perfect square?(w/out a calculator)?

answers using square roots as well, not with decimals or anything. please~

Top 3 Answers

A few days ago

Charliemoo

Favorite Answer

there are apparantly so many ways my eyes go goggle just looking at it.. heres the link

http://en.wikipedia.org/wiki/Methods_of_computing_square_roots

A few days ago

sugarkins

example : sqrt 20

first you want to numbers that when you multiply give you twenty like four and five. you already know four is a perfect square root so you take it out as two and leave five inside the sqrt because that is not a perfect square. so your anwser would be. two sqrt of five.

Therefore if you have a sqrt of a number thats not perfect find a number that is a perfect root that can be multiplied by another and take that square root, bring it outside the root and keep the others in.

A few days ago

Mike

there is a step by step procedure that almost equates to trial and error division. Too complicated to describe here. Look it up in your textbook.

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How do you find the square root of a number that doesn’t have a perfect square?(w/out a calculator)?

How do you find the square root of a number that doesn’t have a perfect square?(w/out a calculator)?

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