IGCSE
EDEXCEL
Further Mathematics
5 Marks
QP-FurtherPureMath-201901-P1 · Question 3
Question (excerpt):
8 3 f(x) = (2x + 1)(x2 + 5x – 3) (a) Show that f(x) = 2x3 + 11x2 – x – 3 (2) (b) Hence use algebra to solve the equation 2x3 + 11x2 – x – 3 = 0 Give your roots to 3 decimal places where appropriate. (…
8 3 f(x) = (2x + 1)(x2 + 5x – 3) (a) Show that f(x) = 2x3 + 11x2 – x – 3 (2) (b) Hence use algebra to solve the equation 2x3 + 11x2 – x – 3 = 0 Give your roots to 3 decimal places where appropriate. (…
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