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. This 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 = 1.73205080757

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.”

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.

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

Type square root symbol (√) in different devices –

Device	Symbol	Keyboard Shortcut
Windows PC	√	Alt + 251
Mac	√	Option + V
iPhone/iPad	√	Long-press V
Android	√	Long-press V
Linux	√	AltGr + V
LaTeX (Math mode)	√	\sqrt{} or \sqrt{number}
HTML	√	√  or  √
ASCII	√	\/   (Backslash followed by forward slash)

Write the square root symbol (√)  in Different versions of MS-WORD using the following methods:

1. Using the Equation Editor:
   • Go to the “Insert” tab.
   • Click on the “Equation” button.
   • In the Equation Editor, choose the “Square Root” symbol from the available options.
2. Using the Symbol menu:
   • Go to the “Insert” tab.
   • Click on the “Symbol” button.
   • Select “More Symbols” from the drop-down menu.
   • In the “Symbol” dialog box, choose “Mathematical Operators” from the “Subset” drop-down menu.
   • Look for the square root symbol (√) in the list and click on it.
   • Click the “Insert” button to add it to your document.
3. Using keyboard shortcuts:
   • For newer versions of Microsoft Word (2010 and above) with the Equation Editor enabled, you can use the shortcut Alt + = to open the Equation Editor and then type \sqrt followed by a space to insert the square root symbol.
   • For older versions of Microsoft Word (prior to 2007), you can use the shortcut Alt + 251 on the numeric keypad to directly insert the square root symbol (√).

Understand In More Detail

SQUARE ROOT SYMBOL IN WINDOWS

#1 How to type square root symbol

1. 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.
2. Turn on the numeric keypad that is on the right side of the main keyboard with the Num Lock key.
3. Then press the Alt key and, while holding it, type 251 on the numeric keypad and finally Release the Alt key.
4. If everything is done correctly, you will see the root symbol.
5. By the way, if the right Alt doesn’t work, use the left Alt.
6. 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

1. In case you don’t have a numeric keypad or this method will be more convenient for you.
2. Press Win + R on your keyboard to bring up the Run window.
3. Add charmap.exe command and click OK.
4. If everything is done correctly, you will see a symbol table in front of you.
5. In the list of symbols, find the root sign by clicking on Advanced view then type square in search box, then click on it and alternately click on the “Select” and “Copy” buttons.
6. Then paste the character where you want it on the line.
7. Done.
8. 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).
9. 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 Option+V

√ – Option+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

Applications of the Square Root Symbol

• Pythagorean Theorem
• Quadratic Equations
• Standard Deviation in Statistics
• Electrical Engineering and Complex Numbers
• Financial Calculations and Risk Management

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.

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.

Conclusion

The square root symbol (√) is a mathematical symbol used to represent the square root operation. It is widely used in mathematical equations and expressions to indicate the principal square root of a non-negative number. The symbol resembles a checkmark or a horizontal line with a diagonal line extending from its top left to its bottom right. Different devices and platforms, such as computers, smartphones, and word processing software, offer various methods to write the square root symbol, including keyboard shortcuts, HTML entities, LaTeX commands, and ASCII representation.

FAQ’S

What does the square root symbol (√) represent?

The square root symbol (√) represents the mathematical operation of taking the square root of a number. It denotes finding a value that, when multiplied by itself, equals the given number.

Who introduced the square root symbol?

The square root symbol (√) is credited to the ancient Greek mathematician, Heron of Alexandria, who introduced it in his work “Metrica” in the 1st century AD.

What are some practical applications of the square root symbol?

The square root symbol (√) is widely used in various fields, including geometry, algebra, statistics, physics, engineering, computer science, and finance. It finds applications in solving equations, analyzing data, calculating standard deviation, manipulating complex numbers, and option pricing, to name a few.

How is the square root symbol (√) used in the Pythagorean theorem?

In the Pythagorean theorem, the square root symbol (√) is used to calculate the length of the hypotenuse in a right-angled triangle. By taking the square root of the sum of the squares of the other two sides, the length of the hypotenuse can be determined.

What is the relationship between the square root symbol (√) and quadratic equations?

The square root symbol (√) plays a crucial role in solving quadratic equations, particularly in determining the nature of their roots. By calculating the discriminant, which involves the square root symbol (√), we can determine if the equation has real roots, repeated roots, or complex roots.

How is the square root symbol (√) used in financial calculations?

In finance, the square root symbol (√) is used to calculate the standard deviation.