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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

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

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

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

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

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

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 ...

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

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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