Using the surds √2 √8 √10 √160 √320 and the operations ÷ and ×

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Presentation transcript:

Using the surds √2 √8 √10 √160 √320 and the operations ÷ and × How many ways can you make 4 ? You can use each surd more than once.

What is the perimeter of this triangle, in exact form? 2cm 6cm

Surds Basic simplifying rules Writing surds in their simplest form Expanding brackets (single and double) Rationalising the denominator

Basic Simplifying Rules 3 × 2 = 3 ×2 = 6 6 2 = 6 2 = 3

Writing Surds in their simplest form 18 = 2 ×9 = 2 × 9 =3 2 50 = 2 ×25 = 2 × 25 =5 2