Khan/khan-exercises — Issue #5613: Adding and subtracting polynomials - blank option
Author: KhanBugz
Created: 2011-11-05 00:10:38+00:00
State: open
Labels: chrome, win7

Reporter: mano.iglesias@gmail.com

there are four options appear but one is empty.

[adding_and_subtracting_polynomials.html?seed=5&problem=subtract](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_polynomials.html?seed=5&problem=subtract&debug)

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Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.106 Safari/535.2

MathJax is loaded, ready, queue length: 0