
#19
Nov1412, 07:31 PM

P: 224





#20
Nov1412, 08:22 PM

Mentor
P: 16,692

Am I understanding you wrong? 



#21
Nov1412, 08:51 PM

P: 224





#22
Nov1512, 12:20 AM

Mentor
P: 21,063





#23
Nov1512, 07:57 PM

P: 273

Edit: Nevermind. I see why. It's because you square both sides, so when you solve for x, you get x=some number. I would go with Bipolarity's method if you need a proof. 


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