Surds

The manipulation of the most common type of irrational number; surds

lesson notes:03 surds

Representing Real Numbers

Proving the irrationality of numbers, and how to write approximations to them

All real numbers can be classified as either rational or irrational

The two types of real numbers; those tat can be written as a fraction and those that cannot.

Rational numbers can be expressed as fractions, irrational numbers cannot.