Square root symbol or square root sign looks like √ and it is a mathematical symbol that people had been writing from the times when ASCII encoding was developed anciently. **T****his sign is well-known as radical, in words.** And you can simply type it right from your keyboard very easily. In this article we’ll show you how to do it by using different ways depending on your Operating System and tastes.

Square root symbol copy

√

From time to time we are faced with the need to add a certain character to the text, but it is absent on the keyboard. It doesn’t matter, because the symbol table is used for the icons. Symbols, in turn, can be written by pressing certain keys on the keyboard. Today we will learn to print/write the square root sign.

For example – Square root of 3 is √3 = 1.44224957

**Other names for root symbols √**

In mathematics, the square root and other root symbols have the following names.

- Radical symbol
- Radical sign
- Root symbol
- radix
- Deaf

**Root Signs Overview**

**Microsoft Windows**

√ – Alt+251

**Apple Mac OS**

√ – ALT+V

**In Word Document**

Tap on __Insert____ __top of the monitor. Tap on ** Symbol **right side of the strip. Tap on

__More symbols__**in the container that appears.**

Tap on the “Subset” that is displayed. Choose “Mathematical operators” placed in the third line. Tap “Insert.” The radical symbol will show in your text/Document.

**IN DETAIL**

## SQUARE ROOT SYMBOL IN WINDOWS

**#1 How to type square root symbol**

- You will not see the root sign on the main keyboard of your computer or laptop, but this does not mean that it cannot be specified.
- Turn on the numeric keypad that is on the right side of the main keyboard with the Num Lock key.
- Then press the Alt key and, while holding it, type 251 on the numeric keypad (alternately, that is, first 2, then 5 and finally Release the Alt key.
- If everything is done correctly, you will see the root symbol.
- By the way, if the right Alt doesn’t work, use the left Alt.
- If you did the whole thing properly, a root sign will appear on the screen. It looks like this: √ (you can simply copy it from here)

**#2 Square root symbol in word**

- In case you don’t have a numeric keypad or this method will be more convenient for you.
- Press Win + R on your keyboard to bring up the Run window.
- Add
**charmap.exe**command and click OK. - If everything is done correctly, you will see a symbol table in front of you.
- In the list of symbols, find the root sign (it may take some time to search), then click on it and alternately click on the “Select” and “Copy” buttons.
- Then paste the character where you want it on the line.
- Done.
- And yet, the first method seems to us more convenient – provided that the main keyboard is endowed with a numeric keypad (on laptops, for example, it is not so common).
- If you did all in the approved manner, a root sign will appear on the screen. It looks like this: √ (you can simply copy it from here). So you yourself can write many other different emoticons in Word and other text editors.

**Square root Symbol on Mac**

To type the root symbol in Mac OS X, all you would like to try to to is clicking ALT+V

√ – ALT+V

Navigate to the file where you would like the root symbol inserted in. you’ll use this advance in any Mac program that permits typing including an internet browser.

Tap the situation where you would like to feature the symbol.

Click ⌥ Option+v. it’ll bring the Square root symbol Easily.

**Option + V key**

**What is square root sign in Algebra**

The definition of the arithmetic square root does not add clarity, but it is worth memorizing it:

**The arithmetic square root** of a non-negative number “**m”** is a non-negative number whose square is equal to **a**.

The definition of the square root can also be represented in the form of formulas:

√m = x

x ^{2} = m

x ≥ 0

m ≥ 0

It follows from the definition that “**m”** cannot be negative. That is, what is under the root is necessarily a positive number.

To understand why this is exactly the case, let’s look at an example.

Let’s try to find the root of √-81

Here it is logical to assume that 4, but let’s check: 9 * 9 = 81 – does not converge.

If – 9, then -9 * -9 = 81, (minus by minus always gives plus).

It turns out that no number can give a negative result when squaring it.

**The numbers under the root sign must be positive.**

Based on the definition, the **value of the root should also not be negative**.

Reasonable questions may arise here, why, for example, in the example x ^{2} = 81, x = 9 and x = -9.

**History of square root**

The radical first appeared in 1525, when Christoff Rudoff, a German mathematician, made use of the symbol to refer to the square root in his textbook on algebra, entitled “Coss.”

1220

For the year 1637, the famous French philosopher and physical mathematician Rene Descartes makes use of the symbol and adds an upper bar in geometry.

**Origin of the Radical Symbol**

The square root symbol is represented. The Initial use of this sign is originate in the work of Leonardo of Pisa, “Practical Geometry” commencing the year 1220.

1637 – **Nicolas Chuquet**

1525 – **Christoff Rudoff**

**The square root**

In the eleventh century, the French mathematician Nicolás Chuquet, wrote his thesis on algebra where he refers to an exponential data, printed as: RU, where R is the square root, This opens the entry for new studies and better representations, but above all to give the symbol a character of stability and worldwide existence.

**Where does the square root apply?**

Basically, the square root is used in mathematics, physics to simplify complex power functions, inequalities and equations. Even in ancient times, people just needed to calculate the square root. Many were engaged in agriculture and dividing the area into squares, they could not calculate anything without a root. Therefore, the root sign was introduced by human necessity, since knowing the area, people in the sixteenth century needed to calculate the side of the square.

That is why the square root was introduced, which we use to this day. And now, we often need it. Let’s remember the Pythagorean Theorem, What do we know about it? The square of the hypotenuse is equal to the sum of the squares of the legs in a right-angled triangle. And if we need to calculate the side of a square-shaped plot of 100 square meters, what do we use? The square root, of course. And then it will be easy for us to do it. The square root of 100 is 10. So our side of the site is 10 meters.