Irrational Number

An irrational number simply can’t be expressed as a rational number. In other words, it can’t be expressed as a fraction of two integers (x) and (y). An irrational number’s decimal expansion is neither recurring nor finite – it just goes on forever. Common irrational numbers are π (3.14…) and e (2.718…). Surds are another type of irrational number – they are non-perfect cubes or squares that can’t be reduced further to remove a cube root or square root. For example, √2 is an irrational number because it cannot be expressed as a rational number. However, √4 is a rational number because it can be expressed as 2/2 (two over two)

## Rational vs. Irrational Numbers: What’s the Difference?

Rational vs. irrational numbers - which one is which? This article will tell you everything you need to know about these two types of numbers, how they differ and how to work with them. Read more ...