Part 15 - Special feature II | Maths Made Easy

Surds GCSE Maths Revision

Part 15 – Special feature II

Same applies for the other way as well, if need be, though it is best to leave it in the simplest format as possible. The following are just for you to understand the relationship between square numbers and square roots.

Example:

Rewrite 2√2 as a single number under a square root.

Worked Solution:

Using the rule √ab≡√(a×b)≡ √a×√b and √s=n provided that n2=s, then:

2√2=√4×√2=√(4×2)=√8


Your turn:

Rewrite 4√5 as a single number in the form √k.

Find the value of k.

Enter your answer here:

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