Show that 27+72+7\displaystyle \frac{2\sqrt{7} + 7}{2 + \sqrt{7}}2+727+7 can be written as 7\sqrt{7}7
Practise AQA GCSE Maths Surds with exam-style questions for Foundation and Higher tier. 80 questions, matched to the AQA GCSE Maths (8300) specification and written in Paper 1, Paper 2 and Paper 3 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.