LaTeX Square Root (√) - Complete Guide

The square root symbol (√) represents the square root function in mathematics.

Symbol Preview

√

Square Root

LaTeX Code

Method 1: Using \sqrt{x}

No package required

Recommended

\sqrt{x}

Square root of x

Method 2: Using \sqrt[n]{x}

No package required

\sqrt[n]{x}

nth root of x

What is the LaTeX Square Root?

The square root symbol (√) is used to denote the principal square root. The \sqrt command in LaTeX can also be used for nth roots using the optional parameter.

How to Use Square Root in LaTeX

Method 1: Using \sqrt{x}

✅No package required

Square root of x

Example: Using \sqrt{x}

latex

\documentclass{article}

\begin{document}

% Using the Square Root
Text with \sqrt{x}

\end{document}

Method 2: Using \sqrt[n]{x}

✅No package required

nth root of x

Example: Using \sqrt[n]{x}

latex

\documentclass{article}

\begin{document}

% Using the Square Root
Text with \sqrt[n]{x}

\end{document}

Common Use Cases

The Square Root symbol is commonly used in the following contexts:

Square Root

Basic square root.

Code

$\sqrt{9} = 3$

Output

√9 = 3

Nth Root

Root of any degree.

Code

$\sqrt[3]{8} = 2$

Output

∛8 = 2

Complete Examples

Quadratic Formula with Roots

Square root in formulas

latex

\documentclass{article}
\begin{document}

The solutions are:
$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$

The square root in the numerator:
$$\sqrt{b^2 - 4ac}$$

\end{document}