Khan/khan-exercises — Issue #14804: Simplifying expressions with exponents - answer issue
Author: KhanBugz
Created: 2012-02-27 23:55:40+00:00
State: open
Labels: ie8, ie9, win7, wrong-or-unclear

Reporter: emily.weed@whitemountain.org

when i type in a number in the second awnswer box,and it's supossed to be a negitive number it tells me that it's wrong and that all i need to do is type in the same nuimber but positive. example :Simplify; express your answer in exponential form. Assume a≠0,r≠0 .

(a −1 ) −5 / (a 1 r −2 ) 4 the second box would be a negitive number but it tells me i have to put a positive number in the box for it to be right

[simplifying_expressions_with_exponents.html?seed=75&problem=simplify-exponential-form-mini](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/simplifying_expressions_with_exponents.html?seed=75&problem=simplify-exponential-form-mini&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/simplifying_expressions_with_exponents.html?seed=75&problem=simplify-exponential-form-mini&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%221%5C%22%2C%5C%22-8%5C%22%5D%22%2C32%5D%2C%5B%22correct-activity%22%2C%22%5B%5C%221%5C%22%2C%5C%228%5C%22%5D%22%2C23%5D%5D)

[["1","-8"],["1","8"]]

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; BRI/2; .NET4.0C)

MathJax is loaded, ready, queue length: 0