Quick questions on Surds and indices: simplifying, rationalising and the laws of powers - SQA National 5 Maths

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?

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Simplify

\sqrt{45} + \sqrt{20}

. [2 marks]

What is q2?

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Rationalise the denominator of

\dfrac{8}{\sqrt{2}}

. [2 marks]

What is q3?

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Evaluate

27^{2/3}

. [2 marks]

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