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# Simple variable puzzle

### #1 Kikacat123

Kikacat123

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Posted 05 February 2014 - 03:47 PM

2x squared = 4x squared. X = all real numbers. How is this possible?
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### #2 Perhaps check it again

Perhaps check it again

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Posted 06 February 2014 - 03:14 AM

Options

1) You can't have ambiguity. You can't have "2x squared" meaning (2x) squared = 4x2 and have

"4x squared"  meaning 4x2  also.

2) "x" and "X" are different cases of the same letter, and therefore they represent different variables.

So, it would be consistent for those two equations to exist, because you have two different

variables in them.

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