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

The area of the shape is 42cm2
Show that 2x2+19x−150=02x^2 + 19x - 150 = 02x2+19x−150=0
Find the value of xxx. Give your answer to 3 significant figures.
49 exam-style questions on AQA GCSE Maths Quadratic Formula. Each one has a worked solution and a mark scheme showing where the marks go.