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Question id: 332. This question is similar to one that appeared in a GCSE Higher paper in 2017. The use of a calculator is allowed.
The area of rectangle PQRS (not to scale) is 80cm2.
(a) Show that \( x^2 + 14x = 40\).
(b) Find the value of \( x \) giving your answer correct to three significant figures.
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Do you need more practice with this sort of thing? Try Algebraic Perimeter to improve your skills.
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