Submitted by jetay1 on Wed, 01/04/2017 - 00:22
I think there's a stray $a$ in the middle of the solution to Q3(ii) of assignment 19 (page 4 of the hints).
It currently reads: \[\frac{a+7}{b+7}=\frac{a^2+51}{b^2+51}a,.\]
I loved the last part of that question - it took me ages to find the common factor.
Thanks!
Stray $a$ removed, thanks again! Glad you enjoyed the question :-)