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O-LevelAdditional MathematicsQuadratic functions4037/22 · Oct/Nov 2013 · Q13 Marks

Find the set of values of x for which x² < 6 – 5x.

(a)Find the set of values of x for which x² < 6 – 5x.[3]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2013). The mark or mark type is shown in brackets.

[M1] (x+6)(x-1) Attempt to solve a three term quadratic
[A1] Critical values -6 and 1
[A1] -6 < x < 1 Allow x > −6 AND x < 1 but not OR or a comma. Mark final answer.

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About this question

Topic: Quadratic functions, O-Level Additional Mathematics (syllabus 4037). Structured question, 3 marks.
Source: O-Level Additional Mathematics, Oct/Nov 2013 Paper 2 Variant 2, question 1.

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