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Question 19
70%
a.

Express 2x2+9x+k2x^2 + 9x + k2x2+9x+k in the form a(x+b)2+ca(x + b)^2 + ca(x+b)2+c

[3]
b.

Find the values of k k\,k for which the curve y=2x2+9x+ky = 2x^2 + 9x + ky=2x2+9x+k does not intersect the line y=2y = 2y=2

[3]

Quadratics Questions

  1. A Level
  2. /Maths
  3. /Quadratics

Practise Edexcel A Level Maths Quadratics with exam-style questions for A Level Maths. 25 questions covering 2.1 Solving Quadratics, 2.2 Completing the Square, 2.3 Sketching Quadratic Graphs, 2.4 The Discriminant, and 2.5 Modelling with Quadratics, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank