Show that 23+6154+15\displaystyle \frac{23 + 6\sqrt{15}}{4 + \sqrt{15}}4+1523+615 can be written as 2+152 + \sqrt{15}2+15
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.