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O-LevelAdditional MathematicsFactors of polynomials4037/11 · Oct/Nov 2010 · Q45 Marks

Factorise completely the expression 2x³ – 11x² – 20x – 7.

  1. Factorise completely the expression 2x³ – 11x² – 20x – 7.[5]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2010). The mark or mark type is shown in brackets.

  1. M1 M1 for attempt to find a root
  2. DM1 DM1 for attempt to obtain quadratic factor
  3. A1 A1 correct quadratic factor
  4. DM1, A1 DM1 attempt to factorise quadratic factor

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About this question

Topic
Factors of polynomials, O-Level Additional Mathematics (syllabus 4037). Structured question, 5 marks.
Source
O-Level Additional Mathematics, Oct/Nov 2010 Paper 1 Variant 1, question 4.

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