Khan/khan-exercises — Issue #9761: Equation of a hyperbola -  square roots
Author: KhanBugz
Created: 2011-12-29 04:56:37+00:00
State: open
Labels: ie8, win7, wrong-or-unclear

Reporter: promptar@aol.com

I think your solution is wrong on this. for example square roots of (a square + b squre) does not equal +_ (a+b).
Only square roots of (a square + 2ab + b squre) equals +_ (a+b)

[equation_of_a_hyperbola.html?seed=0&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/equation_of_a_hyperbola.html?seed=0&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/equation_of_a_hyperbola.html?seed=0&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%2216%5C%22%2C%5C%228%5C%22%2C%5C%221%5C%22%5D%22%2C1198%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C32%5D%2C%5B%22hint-activity%22%2C%220%22%2C40%5D%2C%5B%22hint-activity%22%2C%220%22%2C77%5D%2C%5B%22hint-activity%22%2C%220%22%2C88%5D%5D)

[["16","8","1"]]

Mozilla/4.0 (compatible; MSIE 8.0; AOL 9.6; AOLBuild 4340.168; Windows NT 6.1; WOW64; Trident/4.0; GTB7.2; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C)

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