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Completing the Square

Completing the Square

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Question 139
a.

Show that 3x2−30x+63=3(x−5)2−123x^2 - 30x + 63 = 3(x - 5)^2 - 123x2−30x+63=3(x−5)2−12.

[3]
b.

Hence, or otherwise, verify that the coordinates of the turning point of the graph of y=3x2−30x+63y = 3x^2 - 30x + 63y=3x2−30x+63 are (5,−12)(5, -12)(5,−12)

[1]
Markscheme

Completing the Square Questions

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

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

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