Edexcel Mathematics October 2021 · Paper 1 · Question 2 · ExamRizz

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October 2021 · Paper 1 · Question 2 · 4 marks

2. Given that f ( x) = x2 − 4x + 5 x ∈  (a) express f (x ) in the form (x + a)2 + b where a and b are integers to be found. (2) The curve with equation y = f (x • meets the y -axis at the point P • has a minimum turning point at the point Q (b) Write down (i) the coordinates of P (ii) the coordinates of Q (2) 5

Lesson: Laws of Indices