Daily Maths Challenges

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siriusmart

Equalities 1 (hrmacbeth.github.io)

submitted 6 days ago* (last edited 6 days ago) by [email protected] to c/dailymaths

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Let a and b be rational numbers and suppose that (a-b)=4 and a*b=1 . Show that (a+b)^2 = 20.

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[–] siriusmart 1 points 4 days ago (1 children)

of course the website has something to do with lean

[–] [email protected] 1 points 3 days ago

yeah I found this website quite interesting even if I dont want to learn lean right now you can learn some cool proofs. Do you mind if I post other questions from that one here?