Khan/khan-exercises — Issue #10018: Completing the square 1 - almost hard problem
Author: KhanBugz
Created: 2012-01-02 13:44:38+00:00
State: open
Labels: firefox, other, win7

Reporter: phanthanhkhai@ymail.com

i can't , like i can't do it well and it takes me lots of time to solve it

[completing_the_square_1.html?seed=175&problem=original](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/completing_the_square_1.html?seed=175&problem=original&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/completing_the_square_1.html?seed=175&problem=original&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%223%5C%22%2C%5C%2217%5C%22%5D%22%2C74%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%5D)

[["3","17"]]

Mozilla/5.0 (Windows NT 6.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

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