Show that 212+1\displaystyle \frac{2}{\frac{1}{\sqrt{2}} + 1}21+12 can be written as 4−224 - 2\sqrt{2}4−22
Practise Edexcel GCSE Maths Surds with exam-style questions for Foundation and Higher tier. 80 questions, matched to the Edexcel GCSE Maths (1MA1) 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.