What counts as a surd?
What counts as a surd?
A surd is an exact root that is irrational, such as 2\sqrt{2}2 or 7\sqrt{7}7. If the root evaluates to a whole number, then it is not a surd.
What counts as a surd?
What counts as a surd?
A surd is an exact root that is irrational, such as 2\sqrt{2}2 or 7\sqrt{7}7. If the root evaluates to a whole number, then it is not a surd.
Step-by-step lessons covering Oxford AQA IGCSE Maths Surds for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) format. Since content from any part of the specification can appear on either paper, keep number and algebra fluency sharp throughout the course rather than leaving it until near the exam.