Khan/khan-exercises — Issue #15010: Exponent rules - Exponent rules 
Author: KhanBugz
Created: 2012-02-29 19:43:17+00:00
State: open
Labels: chrome, vista, wrong-or-unclear

Reporter: boy.forfreedom@gmail.com

In Exponent rules A negative Plus an negative is a positive. on the current problem ((7^-9)(7^-7) = 7^16. but it showed 7^-16. It could be wrong. Or the parenthesis are messing me up because the problems in the Module look Different than the ones in the videos Exponent rules 1 & 2.

[exponent_rules.html?seed=112&problem=adding](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/exponent_rules.html?seed=112&problem=adding&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/exponent_rules.html?seed=112&problem=adding&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%2216%5C%22%5D%22%2C22%5D%2C%5B%22hint-activity%22%2C%220%22%2C1%5D%2C%5B%22hint-activity%22%2C%220%22%2C1%5D%5D)

[["16"]]

Mozilla/5.0 (Windows NT 6.0; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11

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