Khan/khan-exercises — Issue #12109: Dividing complex numbers - wrong answer
Author: KhanBugz
Created: 2012-01-25 19:39:27+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

Reporter: bartlomiej.baryla@gmail.com

for the real part solution should be -0,80 and is -1. Thw problem is (-3-i)/(3+i). The mistake is in the last step where -9 +1 is equal to -10 and should be to -8

[dividing_complex_numbers.html?seed=7&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/dividing_complex_numbers.html?seed=7&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/dividing_complex_numbers.html?seed=7&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%220%2C80%5C%22%2C%5C%220%5C%22%5D%22%2C80%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%22-0%2C80%5C%22%2C%5C%220%5C%22%5D%22%2C8%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C8%5D%5D)

[["0,80","0"],["-0,80","0"]]

Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.75 Safari/535.7

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