Use and interpret positive, negative and zero indices.
The index refers to the power to which a number is raised. In the example 5 to the 3 the number 5 is raised to the power 3. The 3 is known as the index. Indices is the plural of index.
Laws of Indices:
When working with numbers involving indices there are three basic laws which can be applied. These are:
1) a to the m x a to the n = a to the m+n.