OCR Further Pure Core 1 Specimen — Question 2

Exam BoardOCR
ModuleFurther Pure Core 1 (Further Pure Core 1)
SessionSpecimen
TopicRoots of polynomials

2 In this question you must show detailed reasoning. The equation \(\mathrm { f } ( x ) = 0\), where \(\mathrm { f } ( x ) = x ^ { 4 } + 2 x ^ { 3 } + 2 x ^ { 2 } + 26 x + 169\), has a root \(x = 2 + 3 \mathrm { i }\).
  1. Express \(\mathrm { f } ( x )\) as a product of two quadratic factors.
  2. Hence write down all the roots of the equation \(\mathrm { f } ( x ) = 0\).