Khan/khan-exercises — Issue #12976: Simplifying expressions with exponents - Wrong Answer or I don't understand?
Author: KhanBugz
Created: 2012-02-03 04:27:05+00:00
State: open
Labels: ie8, win7, wrong-or-unclear

How did the exponent (8) for n suddenly become negative in step 4?

[simplifying_expressions_with_exponents.html?seed=111&problem=simplify-exponential-form-mini](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/simplifying_expressions_with_exponents.html?seed=111&problem=simplify-exponential-form-mini&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/simplifying_expressions_with_exponents.html?seed=111&problem=simplify-exponential-form-mini&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%22-5%5C%22%2C%5C%228%5C%22%5D%22%2C34%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%22-11%5C%22%2C%5C%228%5C%22%5D%22%2C19%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%2C8%5D%2C%5B%22hint-activity%22%2C%220%22%2C9%5D%2C%5B%22hint-activity%22%2C%220%22%2C10%5D%5D)

[["-5","8"],["-11","8"]]

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; HPNTDF; .NET4.0C)

MathJax is loaded, ready, queue length: 0