Khan/khan-exercises — Issue #11263: Completing the square 1 - wrong answer for completing the square
Author: KhanBugz
Created: 2012-01-15 08:37:29+00:00
State: open
Labels: ie8, wrong-or-unclear, xp

Reporter: sittin_round@yahoo.com

for the problem x 2 −20x+100=0, the only answer is -10. When this answer is given by the student, it is corrected as wrong and then -10 is given as the answer... making it difficult to go on to the next question.

[completing_the_square_1.html?seed=57&problem=original](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/completing_the_square_1.html?seed=57&problem=original&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/completing_the_square_1.html?seed=57&problem=original&debug&activity=%5B%5D)

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