Test yourself on Surds with exam style questions, marked instantly.
Flashcards that come back just before you would forget them.
A revision plan that remembers what you know and shows what to do next.
See which topics you have nailed and which need another look.
Quiz yourself on SurdsGet your flashcardsBuild my revision planTrack my progressMethod: Rationalising the Denominator
1
Single surd: Multiply by √a/√a
2
Example: 3/√5 = 3/√5 × √5/√5 = 3√5/5
3
Higher: for two terms, use the conjugate (a+√b) → (a-√b)
4
Example: 1/(2+√3) × (2-√3)/(2-√3) = (2-√3)/1
Make this stick
Signing in gives access to all PrepWise features.