Khan/khan-exercises — Issue #9663: Algebra challenge - Please fix Algebra challenge bug
Author: KhanBugz
Created: 2011-12-28 01:27:11+00:00
State: open
Labels: ie8, ie9, other, win7

Reporter: illidan2007@hotmail.com

More questions appear this problem that I only can chick the green button "Check Answer". Such as Determine where f(x) intersects the x-axis.

f(x) = plus( SQUARE + "x^2") + plus( LINEAR + "x" ) + CONSTANT

x = \quadA

[algebra_challenge.html?seed=18&problem=one-root (solving_quadratics_by_factoring)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/algebra_challenge.html?seed=18&problem=one-root&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/algebra_challenge.html?seed=18&problem=one-root&debug&activity=undefined)

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