87http://upload.wikimedia.org/math/9/0...e95ece8fdc.png3595I was not sure how to right this so i will also say it 87 radical 53595. I could do this with a calculator.

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- July 2nd 2008, 10:45 AMMistaMistaHelp with square root without calculator
87

__http://upload.wikimedia.org/math/9/0...e95ece8fdc.png3595__I was not sure how to right this so i will also say it 87 radical 53595. I could do this with a calculator.

- July 2nd 2008, 11:35 AMReckoner
First simplify a bit:

Now, there are many methods you could use to obtain a numerical approximation of .

If you know calculus, you can use the Newton-Raphson method to find the zeros of the equation .

Alternatively, try the Babylonian method: For ,- Choose an arbitrary positive start value (try to pick one close to the root).
- Let be the average of and , i.e. .
- Repeat steps 2 and 3 until you reach the desired accuracy.

- July 2nd 2008, 11:50 AMmasters

The best manual method I have found is discussed here: How to Find Square Roots Without a Calculator - by E. Oosterwal

It is much like long division. Follow the example given. Then try your radical. It's really quite simple. No guess work involved.