cameroon gce O level June 2020 additional mathematics paper 2

cameroon gce O level June 2020 additional mathematics paper 2

cameroon gce O level June 2020 additional mathematics paper 2

Given that (x + 1) is a factor of /(x), where /(x) = 2x 3 4* 3x 2 + kx + 2
Find the value of k.
With this value of k,
(b) Show that f ( x ) = (x + l)(2x 2 + x + 2).
(ii) Given also that a and /? are the roots of the equation x 2 + x + 2 = 0.
• • (a) Find the values of a + /3 and a/?. . . . .
Hence,
(b) write down another quadratic equation with integral coefficients whose roots are – a and -/?.
(3 marks)
(a) (2 marks)
• ‘(2 marks)
(1 mark

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