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Link to the video with the mistake???? • SOLVE √(x-1) + √(x+5) = 1 We come back to a video published recently but quickly dismissed due to a rather gross mistake. But still visible by clicking on the link above This mistake is an opportunity to return in detail to this type of equation, the right attitude to adopt and how to prevent them. We take the opportunity to bring a real educational touch in this sense. Video plan 00:00 Introduction 00:26 Reminder of the facts 01:22 Summary 02:30 Why do we have to make mistakes? 03:02 Part 1 what needed to be added 05:29 A similar equation to understand 07:38 Part 2 See it from the start 10:03 Part 3 See it during the resolution 11:22 Part 4 Why check the solution? 13:48 Moral