Sorry my bad writing detracts, Ill work on that. I was expecting a mixed AUS/US audience, so used "Math" not "Maths" I did proofread it thru[through] a couple

Sorry my bad writing detracts, Ill work on that. I was expecting a mixed AUS/US audience, so used "Math" not "Maths" I did proofread it thru[through] a couple [of] times myself, but should have had a few friends proofread it and give feedback and fix typos before releasing. ps. I've given up the local textbooks in favor of the AoPS.com ones, they are vastly superior imo - they just go much more deeply into things like completing the square etc. Your comments most welcome - I think its an issue worth discussing, even if my writing skills not quite up to the job.