Let’s simplify \({{a}^{5}}\div {{a}^{5}}\).
Using Law 2 of Indices, \({{a}^{5}}\div {{a}^{5}}={{a}^{5-5}}={{a}^{0}}\),
So what is \({{a}^{0}}\)?

Therefore, \({{a}^{0}}=1\).
In general, for \(n=0\), we define
\({{a}^{0}}=1\)
where \(a\) is any real number and \(a\ne 0\).
We shall now apply the laws of indices when the indices are zero or negative integers.
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