Quadratic Formula
18
Medium
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The diagram shows a six-sided shape formed from two rectangles. All measurements are given in centimetres.

A diagram of a six-sided shape formed by two rectangles. The left rectangle has a width of x\, and a height of 3x + 1. The right rectangle has a height of 6. The total width of the shape is 2x + 5.

The area of the shape is 80cm2

a.

Show that 3x2+7x−50=03x^2 + 7x - 50 = 03x2+7x−50=0

[2]
b.

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

[3]

Quadratic Formula Questions

Practise Eduqas GCSE Maths Quadratic Formula with exam-style questions for Foundation and Higher tier. 49 questions, matched to the Eduqas GCSE Maths (C300QS) specification and written in Component 1 and Component 2 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.

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Quadratic Formula Questions

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