Question 20572
Are you aware of rule of division when using powers?
e.g{{{a^m/a^n=a^(m-n)}}}
ok we will come back to this in a minute
{{{2/2=1}}}{{{456/456=1}}}{{{a/a=1}}}{{{a^2/a^2=1}}}
in general{{{a^m/a^m=1}}}
using rule for division{{{a^m/a^m=a^(m-m)=a^0}}}
Hence{{{a^0=1}}}
hope this has helped with your query
Pete