Скачать или смотреть Classify Numbers (Rational and Irrational): Challenge Problems

This video continues with the idea of classifying numbers, specifically rational and irrational numbers, by looking at two more challenging example problems from the Khan Academy involving square roots

A rational number is defined as the ratio or quotient of two integers (whole numbers including zero and negatives). Irrational numbers are effectively not rational numbers, meaning that they cannot be written as fractions. Common examples of irrational numbers are pi, e, various square roots, cube roots, etc.

The general strategy for classifying these numbers is to determine if they can be written as a fraction or not. If so, then they are rational. If not, then they are irrational.

Most square roots are irrational numbers, unless they can be written as the square root of some number squared, like the square root of 4.

Khan Academy exercise to practice:
1. Classify Numbers (Rational and Irrational): https://www.khanacademy.org/math/alge...


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