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SmoothieX · November 20 2012, 07:31 PM

I think the problem is going from line 3 to line 4.

Line 3 is saying that -1^2 and 1^2 are both equal to 1. Which is true.

Line 4 is telling you 1 = -1. Someone conveniently forgot order of operations (PEMDAS) here.

November 20 2012, 07:31 PM	#16
SmoothieX Vice Admiral Location: Massachusetts	Re: A math puzzle I think the problem is going from line 3 to line 4. Line 3 is saying that -1^2 and 1^2 are both equal to 1. Which is true. Line 4 is telling you 1 = -1. Someone conveniently forgot order of operations (PEMDAS) here. Last edited by SmoothieX; November 20 2012 at 08:27 PM.