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# How to find the root of a number

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Find the root of a number is not difficult.

It is enough to have a calculator, a mobile phone or a computer at hand. But there are also some nuances.

Instructions

1

The easiest way is to find the root of the number if at handAttaching calculator. Preferably engineering? Such, in which there is a button with a root sign: ???. Usually, to extract the root, it is enough to type the number itself, and then click on the button: ???.

In most modern mobile phonesIs there an application? Calculator? With the function of extracting the root. The order of finding the root of a number using a telephone calculator is similar to the above.
Example.
Find the square root of 2.
Turn on the calculator (if it is off) andWe consistently press buttons with the image of two and square root (? 2? ???). Press the? =? Key, as a rule, it is not necessary. As a result, we get a number of type 1.4142 (the number of characters and "roundness" depends on the width and settings of the calculator).
Note: when you try to find the root of a negative number, the calculator usually generates an error message.

2

If there is access to a computer, then finding the root number is very simple.
1. You can use the application "Calculator", available on almost any computer. For Windows XP, you can run this program as follows:
?Start? - ?All programs? -? Standard? -? Calculator ?.
It is better to install the view "normal". By the way, unlike the real calculator, the button for extracting the root is marked as? Sqrt ?, and not ???.

If you can not get to the calculator in this way, you can start the standard calculator manually:
?Start? -? Run? -? Calc ?.
2. You can also use some programs installed on your computer to find the number root. In addition, many programs have their own built-in calculator.

For example, for an MS Excel application, you can do the following:
Run MS Excel.

Write in any square number from which to extract the root.

Place the cell pointer on another place

Press the function selection button (fx)

Choose a function? ROOT?

As an argument to the function, we specify a cell with a number

We press OK? Or? Enter?
The advantage of this method is that now it is enough to enter into the cell with a number any value, as in the cell with the function there is an immediate response.
Note.
There are several other, more exoticWays to find the root of a number. For example,? Corner ?, with the help of a logarithmic ruler or tables Bradis. However, in this article these methods are not considered because of their complexity and practical uselessness.

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