Khan/khan-exercises — Issue #14117: Factoring difference of squares 1 - Doesn't accept valid factoring
Author: KhanBugz
Created: 2012-02-18 10:21:06+00:00
State: open
Labels: win7, wrong-or-unclear

(4+x)(x-4) is a valid factoring of x^2-16, but it is not accepted!

[factoring_difference_of_squares_1.html?seed=93&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/factoring_difference_of_squares_1.html?seed=93&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/factoring_difference_of_squares_1.html?seed=93&problem=0&debug&activity=%5B%5D)

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Opera/9.80 (Windows NT 6.1; U; en) Presto/2.10.229 Version/11.61

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