Did i do that right or is the end part ????
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Originally Posted by el123 Did i do that right or is the end part ???? Check your answer here: Wolfram|Alpha (click Show Steps).
On the fourth line you seem to have gone from to which is mentioned here: Freshman's Dream - ProofWiki as it's such a popular mistake to make.
Thats was all a bit confusing there for a while, but i have figured it out. Thanks for both those sites! Im sure they will come in handy.
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