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People are downvoting your answer because the question called for a proof and you posted a picture. While it is a nice illustration of the concept, it is inadequate on its own. You might improve your post by adding algebraic details showing how your idea is correct.


There are two questions wrapped up in this post: "What's wrong with my answer?", and "Explain downvoting behavior.". AlexanderGruber addresss the first question, so I'm going to respond to the second. At least let me know is anything wrong in the solution so that I can correct it. ... I don't mind even the post gets deleted but there ...

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