Laws of Surds

What you need to learn in this topic

1. Compare rational numbers and irrational numbers, and hence relate surds to irrational numbers
2. Make and verify conjectures on (i) a^0.5 x b^0.5 (ii) a^0.5/b^0.5 and hence make generalisation
3. Simplify expressions involving surds
4. Simplify expressions involving surds by rationalising the denominators
5. Solve problems involving surds