CSEC Mathematics · January 2007 · Paper 2 · Question 9(b)
Expand (x + 3)^2 (x - 4), writing your answer in descending powers of x.
The mark scheme is shown once you've answered.
Practise this questionOther parts of this question
- 9(a)(i)Factorise completely 2p^2 - 7p + 3.[1 mark]
- 9(a)(ii)Factorise completely 5p + 5q + p^2 - q^2.[2 marks]
- 9(c)(i)Write f(x) in the form f(x) = a(x + b)^2 + c where a, b, c ∈ R.[3 marks]
- 9(c)(ii)State the equation of the axis of symmetry.[1 mark]
- 9(c)(iii)State the coordinates of the minimum point.[1 mark]
- 9(c)(iv)Sketch the graph of f(x).[2 marks]
- 9(c)(v)a)On the graph of f(x) show clearly the minimum point.[1 mark]
- 9(c)(v)b)On the graph of f(x) show clearly the axis of symmetry.[1 mark]
More practice: the rest of this paper · more Distributive Law for Factorisation and Expansion questions · all CSEC Mathematics past papers