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Quadratic Formula

Quadratic Formula

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Question 20
a.

For 2x2+4x−1=02x^2 + 4x - 1 = 02x2+4x−1=0, show that b2−4ac=24b^2-4ac=24b2−4ac=24.

[1]
b.

Hence solve 2x2+4x−1=02x^2 + 4x - 1 = 02x2+4x−1=0

Give your solutions correct to 2 decimal places.

[2]
Markscheme

Quadratic Formula Questions

  1. GCSE
  2. /Maths
  3. /Quadratic Formula

156 exam-style questions on Eduqas GCSE Maths Quadratic Formula. Each one has a worked solution and a mark scheme showing where the marks go.

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