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Completing the Square

Completing the Square

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Question 15
a.

Write 4x2−16x+234x^2 - 16x + 234x2−16x+23 in the form a(x+b)2+ca(x + b)^2 + ca(x+b)2+c where aaa, bbb, and c c\,c are integers.

[3]
b.

Hence, or otherwise, write down the coordinates of the turning point of the graph of y=4x2−16x+23y = 4x^2 - 16x + 23y=4x2−16x+23

[1]
Markscheme

Completing the Square Questions

  1. GCSE
  2. /Maths
  3. /Completing the Square

56 exam-style questions on AQA GCSE Maths Completing the Square. Each one has a worked solution and a mark scheme showing where the marks go.

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