# What are all square roots of 81?

## What are all square roots of 81?

Thus, the square root of 81 is 9.

## What are all square roots of 100?

List of Perfect Squares

NUMBER SQUARE SQUARE ROOT
97 9,409 9.849
98 9,604 9.899
99 9,801 9.950
100 10,000 10.000

Which of the following is equal to square root of 81 100?

square root of 81/100 = – Gauthmath.

What do you mean by square root of 81 is 9?

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 .

### What are the two square roots of 100?

Notice (−10)2=100 ( − 10 ) 2 = 100 also, so −10 is also a square root of 100 . Therefore, both 10 and −10 are square roots of 100 .

### What is a square root of 21?

4.58257569495584
Thus, the square root of 21 is 4.58257569495584.

What are the 2 square roots of 81?

What are the positive and negative square roots of 100 81?

2 Answers By Expert Tutors The answer is 10/9 because 102=100 and 92 = 81 so 10 the square root of each as a fraction would be 10/9.

#### How do you tell if a root is a real number?

Every positive real number has two square roots, one positive and one negative. For this reason, we use the radical sign to denote the principal (nonnegative) square root and a negative sign in front of the radical – to denote the negative square root.

#### Is square root of 7 a real number?

Why is the Square Root of 7 an Irrational Number? The number 7 is prime. This implies that the number 7 is without its pair and is not in the power of 2. Therefore, the square root of 7 is irrational.

How to find the square root of 100 / 81?

Rewrite √100 81 100 81 as √100 √81 100 81. Simplify the numerator. Tap for more steps… Rewrite 100 100 as 10 2 10 2.

What is the Quare root of 81?

Square root of 81 is 9. Both 81 and its square root 9 are perfect squares. 81 is the largest two digit perfect square having the largest single digit number as its square root (9).

## Why is the square root of 100 a rational number?

Why is the Square Root of 100 a Rational Number? Upon prime factorizing 100 i.e. 2 2 × 5 2, we find that all the prime factors are in even power. This implies that the square root of 100 is a positive integer. Therefore, the square root of 100 is rational. What is the Value of 10 square root 100? The square root of 100 is 10.

## How to find the square root of a number?

The square root is the inverse operation of squaring. We can find the square root of 100 using prime factorization, repeated subtraction, and the long division method. The square root of a number is both negative and positive for the same numerical value i.e., the square root of 100 will be 10.