Khan/khan-exercises — Issue #15619: Solving quadratics by factoring - answer should be 9 but does not satisfy
Author: KhanBugz
Created: 2012-03-07 04:43:35+00:00
State: open
Labels: safari, snowleo, wrong-or-unclear

Reporter: sterling.gingher@gmail.com

f(x)=x2 + 18x + 81

[solving_quadratics_by_factoring.html?seed=112&problem=one-root](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/solving_quadratics_by_factoring.html?seed=112&problem=one-root&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/solving_quadratics_by_factoring.html?seed=112&problem=one-root&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%229%5C%22%5D%22%2C10%5D%5D)

[["9"]]

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