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Yeah, it's actually all on youtube, though maybe a bit dated http://www.youtube.com/user/unswelearning I recall watching lectures from 2011 while doing HS1917 though, there must be somewhere you can view newer ones.

Teaching myself Japanese atm. Big regret not doing it at school!

Aww man I've got like no idea how to use LaTex. Let's give it a shot. \frac{(x+y)^2-1}{x^2+xy-x}\times\frac{xy^2-2xy+x}{x+y+1} =\frac{(x+y)^2-1}{x(x+y-1)}\times\frac{x(y^2-2y+1)}{x+y+1} =\frac{((x+y)^2-1)(y-1)^2}{(x+y-1)(x+y+1)} =\frac{((x+y)^2-1)(y-1)^2}{(x+y)^2-1} =(y-1)^2

Sweeet! Glad to be helpful :)

I was never any good at Circle Geo, I love maths completely but Circle Geo I couldn't stand. So forgive me if I'm completely wrong here. Angle GBC = 90 (cos it's a square) Angle GPC = Angle GBC = 90 (from part ii, B,P,C,G are concyclic, therefore we have equal angles in alternate segments)...

B Science (Comp Sci) / B Science 1st year :D