Khan/khan-exercises — Issue #14479: Factoring difference of squares 2 - there is something wrong with the system
Author: KhanBugz
Created: 2012-02-23 05:34:41+00:00
State: open
Labels: ie8, other, win7

I typed the correct answer, but it checked me as wrong; then, I looked at the solution steps and the final answer was exactly as the one I had originally.

[factoring_difference_of_squares_2.html?seed=191&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/factoring_difference_of_squares_2.html?seed=191&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/factoring_difference_of_squares_2.html?seed=191&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%22(7t1\)(7-1\)%5C%22%5D%22%2C35%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%22(7xt1\)(7x-1\)%5C%22%5D%22%2C13%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C7%5D%2C%5B%22hint-activity%22%2C%220%22%2C9%5D%2C%5B%22hint-activity%22%2C%220%22%2C10%5D%2C%5B%22hint-activity%22%2C%220%22%2C12%5D%5D)

[["(7t1)(7-1)"],["(7xt1)(7x-1)"]]

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