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How do you factorise a2-b2-a+b? The answers state (a-b)(a+b-1), and whilst trying to work out the question I got up to "(a+b)(a-b)-(a-b)" but have no idea on what to do next... complete mindblank rn x-x

Tried searching the internet but wasn’t able to find anything regarding IT or Optometry. So if anyone has done work experience in either IT or Optometry please tell me where you worked so I can get ideas. I prefer if it’s not near the city but closer to the suburban areas like Parra, but if not...

Not much information has been shared at my school about Work Experience, to be honest I only first heard about it late last year from family and older friends. I'm planning to do Software Engineering or something related in IT, so I am wondering if you get to choose where you work depending on...