Khan/khan-exercises — Issue #15451: Adding and subtracting polynomials - Wrong answer
Author: KhanBugz
Created: 2012-03-05 18:08:36+00:00
State: open
Labels: ipad, safari, wrong-or-unclear

Reporter: Sica.l.evans@gmail.com

There should be a k^3 answer.

[adding_and_subtracting_polynomials.html?seed=66&problem=subtract](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_polynomials.html?seed=66&problem=subtract&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_polynomials.html?seed=66&problem=subtract&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22None%20of%20the%20above.%5C%22%22%2C215%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22%3Ccode%20style%3D%5C%5C%5C%22display%3A%20none%3B%20%5C%5C%5C%22%3E8k%5E%7B6%7D-6k%3C%2Fcode%3E%5C%22%22%2C1310%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22%3Ccode%20style%3D%5C%5C%5C%22display%3A%20none%3B%20%5C%5C%5C%22%3E-6k%5E%7B6%7D%2B4k%5E%7B3%7D-3k%3C%2Fcode%3E%5C%22%22%2C3%5D%2C%5B%22correct-activity%22%2C%22%5C%22%3Ccode%20style%3D%5C%5C%5C%22display%3A%20none%3B%20%5C%5C%5C%22%3E8k%5E%7B6%7D%2B7k%3C%2Fcode%3E%5C%22%22%2C4%5D%5D)

["None of the above.","8k^{6}-6k","-6k^{6}+4k^{3}-3k","8k^{6}+7k"]

Mozilla/5.0 (iPad; CPU OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3

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