Hey i have a proof but I'm doubting how true it is. Also would like any other methods, but mainly can someone say my proof is valid or not. Here the proof: http://m.imgur.com/a/fuQ9F

Thanks

Edit: Oh, and also the question for some reason is below the proof, must've uploaded it wrong. But the question is in the album.

Thanks

Edit: Oh, and also the question for some reason is below the proof, must've uploaded it wrong. But the question is in the album.

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