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### Approximating square roots (video) | Khan Academy

Learn how to find the approximate values of square roots. ... Approximating
irrational numbers ... Practice: Comparing irrational numbers with a calculator.

### Irrational Numbers

https://www.mathsisfun.com/irrational-numbers.html

An Irrational Number is a real number that cannot be written as a simple fraction.
... Irrational? 1.75, 74, Rational .001, 11000, Rational. √2 (square root of 2) ?

### Square root of 2 - Wikipedia

https://en.wikipedia.org/wiki/Square_root_of_2

See quadratic irrational or infinite descent for a proof that the square root of any
non-square natural number is irrational.

### Rational vs. Irrational Square Roots - Expii

https://www.expii.com/t/rational-vs-irrational-square-roots-4589

Perfect squares have rational square roots, since their square roots are integers.
Some numbers have roots that are irrational—roots that can only be accurately ...

### How do I know if a square root is irrational? + Example

https://socratic.org/.../how-do-i-know-if-a-square-root-is-irrational

Jul 24, 2018 ... This is irrational if n is a prime number, or has no perfect square factors. When we
simplify radicals, we try to factor out perfect squares.

### Examples of Irrational Numbers

https://examples.yourdictionary.com/examples-of-irrational-numbers.html

The Square Root of 2, written as √2, is also an irrational number. The first part of
this number would be written as 1.41421356237…but the numbers go on into ...

### How to Find the Square Root of an Irrational Number

https://sciencing.com/square-root-irrational-number-8232389.html

When it comes to finding the square roots of irrational numbers, a square root
calculator is your best friend for quickly approximating a value. But you can also ...

### Square roots and real numbers (Pre-Algebra, Right triangles and ...

https://www.mathplanet.com/.../square-roots-and-real-numbers

All positive real numbers has two square roots, one positive square root and one
... The irrational numbers together with the rational numbers constitutes the real ...

### Determine Rational or Irrational Numbers (Square Roots and ...

Jun 23, 2017 ... This video explains how to determine if a given number is rational or irrational.

### Rational and Irrational Number

https://mathsdoctor.co.uk/revision.../rational-and-irrational-number/

The square root of 2 is not a number of arithmetic: no whole number, fraction, or
decimal has a square of 2. Irrational numbers are square roots of non-perfect ...

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