What is a surd?
What is a surd?
A surd is an irrational root left in exact form, such as 2\sqrt{2}2 or 5\sqrt{5}5. A square root like 36\sqrt{36}36 is not a surd because it simplifies exactly to 666.
What is a surd?
What is a surd?
A surd is an irrational root left in exact form, such as 2\sqrt{2}2 or 5\sqrt{5}5. A square root like 36\sqrt{36}36 is not a surd because it simplifies exactly to 666.
Step-by-step lessons covering OCR GCSE Maths Surds for Foundation and Higher tier. Each lesson works through exam-style questions in the written papers format. Build fluency with number, ratio and algebra first, since geometry, probability and statistics topics rely on them, and leave extra time nearer the exam for Higher-tier problem-solving and multi-step reasoning questions.