Added: 2 years ago
From: lasseviren1
Views: 2,175
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  • this channel is equivalent to khan academy, PERFECT TEACHING

  • thanks a lot, helped me out !

  • this is a great video, thanks alot.  :)

  • "that area is are 1" and the other area should be area51. lol

  • Thanks a lot man. You explained it pretty well, it helped out a great deal with understanding all of Kepplers nonsense.

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