Contents

- 1 Can you take the square root of an irrational number?
- 2 What is the square of any irrational number?
- 3 Is √ 9 a rational or irrational number?
- 4 What are 5 irrational numbers?
- 5 Is Zero is a rational number?
- 6 Is the square root of 2 irrational?
- 7 Is negative 10 Irrational?
- 8 How do you know if its rational or irrational?
- 9 Is 2020 a rational number?
- 10 Is √ 16 an irrational number?
- 11 Is 2 an irrational number?
- 12 Is 3 an irrational number?
- 13 Is 81 an irrational number?

## Can you take the square root of an irrational number?

=> Thus, the square root of any irrational number is irrational. Because a an irrational number times a rational number is irrational, we have an irrational number equaling a rational number which is a contradiction.

## What is the square of any irrational number?

The square of an irrational number is always rational.

## Is √ 9 a rational or irrational number?

√9 = 3 which is a natural number, that is can be expressed in the form a/b where a and b are both integers. 9 is a perfect square (square of an integer). In general, square root of a non-perfect integer would be irrational. Answer is no, because root9 result is 3 which is not in rational form.

## What are 5 irrational numbers?

What are the five examples of irrational numbers? There are many irrational numbers that cannot be written in simplified form. Some of the examples are: √8, √11, √50, Euler’s Number e = 2.718281, Golden ratio, φ= 1.618034.

## Is Zero is a rational number?

Answer: Zero is an example of a rational number. Any fraction with non- zero denominators is a rational number. The set of rational numbers include positive, negative numbers, and zero and can be expressed as a fraction. -2 is an example of a negative rational number.

## Is the square root of 2 irrational?

Sal proves that the square root of 2 is an irrational number, i.e. it cannot be given as the ratio of two integers. Created by Sal Khan.

## Is negative 10 Irrational?

1 Answer. – 10 is a rational, integer and real number.

## How do you know if its rational or irrational?

To show that the rational numbers are dense: An irrational number is a number that is NOT rational. It cannot be expressed as a fraction with integer values in the numerator and denominator. When an irrational number is expressed in decimal form, it goes on forever without repeating.

## Is 2020 a rational number?

Answer. Answer: 2020 /2019 is definitely a rational number because it is expressed in the form p/q.

## Is √ 16 an irrational number?

A rational number is defined as the number that can be expressed in the form of a quotient or division of two integers i.e., p/q, where q = 0. So √16 is an irrational number.

## Is 2 an irrational number?

The Square Root of 2, written as √ 2, is also an irrational number. Because the square root of two never repeats and never ends, it is an irrational number. Many other square roots and cubed roots are irrational numbers; however, not all square roots are.

## Is 3 an irrational number?

3 is not an irrational number because it can be expressed as the quotient of two integers: 3 ÷ 1.

## Is 81 an irrational number?

81 is a rational number.