Rationalising an expression means getting rid of any surds from the bottom (denominator) of fractions. Usually when you are asked to simplify an expression it means you should also rationalise it.

Surds are square roots which can’t be reduced to rational numbers. Some can be simplified using various rules or by rationalising the denominator. Simplifying expressions using the laws of indices ...

December should be a launchpad for 2026 — not a graveyard of outdated performance reviews and recycled goals that won’t matter in February. But that’s exactly where most leaders get stuck. If 2026 ...

Most people break out in a cold sweat when they see fractions. There's something about those little lines and numbers stacked on top of each other that makes even confident adults feel like they're ...

Standards and guidelines for development co-operation with concrete examples of their implementation ...