Sunday, April 7, 2019

linear algebra - What is the number of real solutions of the equation |x3|3x210x+3=1?

I did solve, I got four solutions, but the book says there are only 3.



I considered the cases |x3|=1 or 3x210x+3=0.


I got for x0:  2,3,13


I got for x>0:  4


Am I wrong? Is 00=1 or NOT?


Considering the fact that : 22=221


21=21


20=1


00 should be 1 right?

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