Radical Formula

Radical Formula

The Radical Formula in mathematics is the opposite of an exponent, which is symbolised by the sign ” √” also known as root. The number preceding the symbol or radical is regarded as an index number or degree, and it can either be a square root or a cube root. This number is written as an exponent and is a whole number that cancels the radical.

The Radical Formula is as follows

n√ x=p

x1/n = p

(x1/n)n = pn

x = pn


The n√ symbol is noted as the radical of the nth root.

The index is noted as ‘n’ 

The expression inside the radical symbol i.e x is known as the radicand.

What is Radical?

A number’s radical and root are interchangeable terms. The root might be an nth root, a square root, or a cube root. A radical is thus any number or phrase that has a root.The Latin word Radix, which means root, is where the word “radical” originates. The radical may be used to explain several types of roots for a number, including square, cube, fourth, and so on. The index number or degree is the number that appears before the radical. How many times the number would need to be multiplied by itself to equal the radicand is helped by this number. Similar to how addition is the opposite of subtraction and division is the opponent of multiplication, this is regarded as being the opposite of an exponent.

For example: ∛2 = 2 as 2 × 2 × 2 = 8.

Radical Definition

The sign √ that denotes a number’s root is known as radical, and it is interpreted as x radical n or the nth root of x. The horizontal line that surrounds the number is known as the vinculum, and the number underneath it is known as the radicand. The index or degree is the number n written before the radical.

Radical General Rules

Students can use the Radical Formula page to understand the radical general rules from the Extramarks. The Extramartks come up with various kinds of examples and solved questions. A radical is a phrase that contains the number’s root. Some general guidelines for radicals are as follows:

If a number is positive, both its radical and its outcome are positive.

If an integer is negative, its radical is also negative.

Only when the number under the radical is negative and any index, including integers, will it be termed illogical.

If no index is specified, the radical will be a square root.

Radical Formula

The  Radical Formula must be rendered radical-free before it can be solved. Students power both sides of the equation with ‘n’ to make an equation of nth root radical free. This obscured the radical equation free of radical.

Radical Examples

By incorporating the  Radical Formula and examples. It will either provide conceptual information or reinforce the fundamental component. Students can have a better understanding of the  Radical Formula by completing exercises. Students may learn about the  Radical Formula by visiting the Extramarks website or downloading the Extramarks mobile app.

Maths Related Formulas
Parabola Formula Standard Form Formula
Polygon Formula Arithmetic Sequence Explicit Formula
Profit Margin Formula Arithmetic Sequence Recursive Formula
Revenue Formula Centroid Of A Trapezoid Formula
Skewness Formula Complex Number Division Formula
Trigonometric Function Formulas Line Of Best Fit Formula
Taylor Series Formula Natural Log Formula
Angle Formula Periodic Formulas
Chi Square Formula Tangent Line Formula
Cross Product Formula Central Angle Of A Circle Formula

FAQs (Frequently Asked Questions)

1. What is the Radical Formula?

The  Radical Formula is one in which roots are involved. It may alternatively be defined as an algebraic equation with fractional exponent terms. Typically, a root or cube root is discovered on one side of the  Radical Formula, with the remaining components on the other. An algebraic equation containing a radical expression is known as a  Radical Formula. Solving radical equations entails isolating the radical on one side of the equal sign, squaring or cubing both sides of the equation, and solving for the variable.