Edexcel Mathematics October 2020 · Paper 2 · Question 8 · ExamRizz

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October 2020 · Paper 2 · Question 8 · 6 marks

8. A curve C has equation y = f (x) Given that ● f ʹ (x) = 6x2 + ax − 23 where a is a constant ● the y intercept of C is −12 ● (x + 4 ) is a factor of f (x) find, in simplest form, f (x) (6) 21 22 23