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Quadratic Formula

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Question 37

The diagram shows a six sided shape formed from two rectangles. All measurements are given in centimetres.

A six-sided shape formed from two rectangles, with the left rectangle labelled 3x and x − 5 and the right rectangle labelled 6 and 7 − x, with measurements in centimetres.

The area of the shape is 26cm2

a.

Show that 3x2−21x+16=03x^2 - 21x + 16 = 03x2−21x+16=0

[2]
b.

Find the value of xxx. Give your answer to 3 significant figures.

[3]
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Quadratic Formula Questions

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

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

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