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Topic: Indices and Standard Form (Higher - Unit 2)

Specification References: N1.7 N1.7 The terms square, positive and negative square root, cube and cube root.

Candidates should be able to:

• quote squares of numbers up to  and the cubes of 1, 2, 3, 4, 5 and 10, also knowing the corresponding roots
• recognise the notation and know that when a square root is asked for only the positive value will be required; candidates are expected to know that a square root can be negative
• solve equations such as , giving both the positive and negative roots

Examples

1. Show that it is possible to write 50 as the sum of two square numbers in two different ways.

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