# Readers ask: How To Solve Square Root Of A Square Root?

## How do you solve square roots examples?

For example, 5 and – 5 are both square roots of 25 because: 5 x 5 = 25 and -5 x -5 =25. The square root of a number x is denoted with a radical sign √x or x 1/2. For instance, the square root of 16 is presented as: √16 = 4. Repeated Subtraction.

25 -1 = 24
21 -5 = 16
16 – 7 = 9
9 – 9 = 0

## Is 4 a perfect square?

For instance, the product of a number 2 by itself is 4. In this case, 4 is termed as a perfect square. A square of a number is denoted as n × n. Example 1.

Integer Perfect square
2 x 2 4
3 x 3 9
4 x 4 16
5 x 5 25

## How do you find a square root without a calculator?

Finding square roots of of numbers that aren’t perfect squares without a calculator

1. Estimate – first, get as close as you can by finding two perfect square roots your number is between.
2. Divide – divide your number by one of those square roots.
3. Average – take the average of the result of step 2 and the root.

## What is a square root of 21?

List of Perfect Squares

NUMBER SQUARE SQUARE ROOT
18 324 4.243
19 361 4.359
20 400 4.472
21 441 4.583

## 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

## What is the square of the 4?

The square of 4 is 4×4. To show that a number is squared, a small 2 is placed to the top right of the number. Like this: These signs are the same as saying “3 squared, 4 squared, and x squared.”

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## What is the perfect square formula?

When an expression has the general form a²+2ab+b², then we can factor it as (a+b)². This method is based on the pattern (a+b)²=a²+2ab+b², which can be verified by expanding the parentheses in (a+b)(a+b).

## Is 80 a perfect square?

80 is not a perfect square. 80 is a natural number, but since there is no other natural number that can be squared to result in the number 80, it is NOT a perfect square root.