$$\\\frac{5^7}{5^7}=5^{7-7}=5^0\\\\
$but$\\\\
$any non-zero number divided by itself $\\\\
so\\\\
5^0=1\\\\
$Anything (including 0) raised to the 0 power is 1 $$$
I would disagree that 0^0 = 1.
I believe that it is an indeterminate expression; which means that it can have any value, depending upon how it was created.
I do fully agree that a^0 = 1, whenever a ≠ 0.
Yes Geno you may be right. I was thinking about this as well. My initial thought was that it was undefined but then I hunted about on the net and found people disagreed with me.
There seemed to be a concesous of opinion that 0^0 was defined as 1 ( this is just one site that said this - there were others)
http://www.youtube.com/watch?v=CZWoAO6rwTM
However, looking at the site below I think I shall change my mind and say that 0^0 is undefined.
http://math.stackexchange.com/questions/11150/zero-to-the-zero-power-is-00-1
Thank you Gino.