Khan/khan-exercises — Issue #9971: Functions 3 - Functions 3 - Math Error
Author: KhanBugz
Created: 2012-01-01 03:17:39+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

Reporter: Phaze228@gmail.com

Exact Quote in "Show solution":
"That means g(-1) = 4(-1)^2 + 3(-4)"
Followed by "g(-1) = -8"
If I did my math correctly...I do think g(-1) would equal 16 + (-12) which equals 4, so g(-1) = 4

[functions_3.html?seed=56&problem=1](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/functions_3.html?seed=56&problem=1&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/functions_3.html?seed=56&problem=1&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2242%5C%22%22%2C147%5D%2C%5B%22hint-activity%22%2C%220%22%2C62%5D%2C%5B%22hint-activity%22%2C%220%22%2C63%5D%2C%5B%22hint-activity%22%2C%220%22%2C63%5D%2C%5B%22hint-activity%22%2C%220%22%2C63%5D%2C%5B%22hint-activity%22%2C%220%22%2C63%5D%2C%5B%22hint-activity%22%2C%220%22%2C63%5D%2C%5B%22hint-activity%22%2C%220%22%2C64%5D%2C%5B%22hint-activity%22%2C%220%22%2C64%5D%2C%5B%22hint-activity%22%2C%220%22%2C64%5D%2C%5B%22hint-activity%22%2C%220%22%2C412%5D%5D)

["42"]

Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.25) Gecko/20111212 Firefox/3.6.25

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