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PART 1 (about linear equations and transformations) • UNDERSTANDING ALGEBRA DEPENDS ON THIS... PART 2 (about expanding brackets and abbreviated multiplication formulas) • Here's why you DON'T UNDERSTAND MATHEMATICS Telegram channel (and contact with the author): https://t.me/mathin2049 https://vk.com/mathin2049 00:00 introduction. 01:55 chapter 1. taking out the trash. 05:23 chapter 2. solve a square equation? why? 13:31 chapter 3. from simple to complex. 26:22 chapter 4. time to chop up the problems.