discrete mathematics - $1+1=0$ What am I doing wrong???!

Sunday, February 3, 2019

discrete mathematics - $1+1=0$ What am I doing wrong???!

Does someone know what I'm doing wrong? I'm struggling with this for a while now and I don't see what I do wrong!

$1+1=$

$1+\sqrt{1}=$

$1+\sqrt{-1*-1}=$

$1+\sqrt{-1}*\sqrt{-1}=$

$1+i*i=$

$1-1=0$

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