Question 13 of 108 in Unit 10

Number 10

2 marks · Normal

Expand and simplify . Express your answer in the form , where and are integers.

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-2

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Common mistakes: Missing minus sign; Incorrect multiplication of surds

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Marking points

M1 · 1 mark · Correctly expands brackets.

A1 · 1 mark · Obtains final answer or .

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