
#37
Nov1212, 08:00 AM

P: 273





#38
Nov1212, 04:32 PM

Mentor
P: 20,948

x = 2 ## \Rightarrow## x^{2} = 4
The steps here are not reversible. If x^{2} = 4, it does not necessarily imply that x = 2. 



#39
Nov1212, 04:39 PM

P: 17





#40
Nov1212, 04:59 PM

Mentor
P: 16,543





#41
Nov1212, 07:51 PM

P: 273

Alright, thanks for the help guys.



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