Posted by AwesomeGuy on Thursday, March 7, 2013 at 12:25am.
y = (x+7)^2 + 1
x+7 = ±√(y-1)
x = -7 ± √(y-1)
As you can see from the ±, there is no one inverse. You have to pick which branch of the parabola you want to use.
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