Edexcel Paper 2 2020 October — Question 6

Exam BoardEdexcel
ModulePaper 2 (Paper 2)
Year2020
SessionOctober
TopicIntegration with Partial Fractions

  1. (a) Given that
$$\frac { x ^ { 2 } + 8 x - 3 } { x + 2 } \equiv A x + B + \frac { C } { x + 2 } \quad x \in \mathbb { R } \quad x \neq - 2$$ find the values of the constants \(A , B\) and \(C\)
(b) Hence, using algebraic integration, find the exact value of $$\int _ { 0 } ^ { 6 } \frac { x ^ { 2 } + 8 x - 3 } { x + 2 } d x$$ giving your answer in the form \(a + b \ln 2\) where \(a\) and \(b\) are integers to be found.