Exponents in Algebra

1. What are the other names for an  exponent ?

An exponent is sometimes called a power or index.

2. What is the value of x0?

The value of xis 1.

The value of any number or variable to the power of 0 is equal to 1. e.g. 320 = 1, (5x4)0 = 1,

3. Is it possible to have a  negative index?

Yes. A negative index involves taking the reciprocal of the variable. e.g. x-4 = 1x4
This is normally studied in more detail in Year 12.