Question

Quick, who can prove
x^0=1
Go!

Answer 1

x/x = x^(1-1)=x^0=1

Answer 2

three minutes, not bad, here's mine
x^0=x^(0+0)=x^0(x^0)
x^0=X^0/x^0=1

Answer 3

technically you should justify division so it should be x^(0-0)=x^0/x^0.....not plus in the power....but hey, who's interested?