# Quick Answer: How To Solve Square Root Mentally?

## How do you solve root equations?

1. Isolate the radical on one side of the equation.
2. Square both sides of the equation.
3. Solve the new equation.
4. Check the answer. Some solutions obtained may not work in the original equation.

## How do you solve root values?

The value of root 3 is a positive real number when it is multiplied by itself; it gives the number 3. It is not a natural number but a fraction. The square root of 3 is denoted by √3. Table of Square Root.

Number Square Root (√)
6 2.449
7 2.646
8 2.828
9 3.000

## What are the roots of 4?

Square Root From 1 to 50

Number Square Root Value
3 1.732
4 2
5 2.236
6 2.449

## Does squaring a square root cancel it?

We can say that the square root and the square cancel each other out. They are the inverse of each other. If we have a number written with the index 2 ( squared ) then taking the square root simply means that we leave out the 2 ( this only applies to positive numbers ).

## Why is 9 The square root of 81?

Explanation: 81 = 9 ⋅ 9 then the square root of √ 81 = 9. Because the double multiplication for the same sign is always positive, the square root is also valid with the other sign 81 =(− 9 )⋅(− 9 ) then √ 81 =− 9 and we can say that √ 81 =± 9.

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## What is 9 The square root of?

The square root of a number is a number that, when multiplied by itself, equals the desired value. So, for example, the square root of 49 is 7 (7×7=49). List of Perfect Squares.

NUMBER SQUARE SQUARE ROOT
6 36 2.449
7 49 2.646
8 64 2.828
9 81 3.000

## Which is the square root of 144?

The value of the square root of 144 is equal to 12. In radical form, it is denoted as √ 144 = 12.