- #1

mark2142

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**Homework Statement:**I am having trouble in understanding the proof. Which step is wrong and why?

**Relevant Equations:**Why ##1 \neq 0## ?

**Mentor note**: Moved from Homework Section

##x=1##

##x^2=x##

##x^2-x=0##

##x(x-1)=0##

##\frac {x(x-1)}{(x-1)}=\frac 0{(x-1)}##

##x=0##

##1=0##

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