Khan/khan-exercises — Issue #13506: Adding and subtracting complex numbers - Add "i" to the imaginary number part of adding & subtracting complex numbers
Author: KhanBugz
Created: 2012-02-09 21:48:22+00:00
State: open
Labels: chrome, lion, other

Reporter: elizabeth@khanacademy.org

@mwahl @eater
May be helpful to add "i" after the "imaginary part" box (like we do for units on some word problems) so it's clear you don't have to enter i in your answer.
Alternatively could have an example of correct answer format in the text above the question. (I know it's shown in the acceptable answer formats but think it'd be helpful to clarify in one of the above ways)

[adding_and_subtracting_complex_numbers.html?seed=4&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_complex_numbers.html?seed=4&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_complex_numbers.html?seed=4&problem=0&debug&activity=%5B%5D)

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Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.46 Safari/535.11

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