Handling Exponents:
Generally when handling exponents it is necessary to follow the different Law of Exponents
1. Product rule
- when multiplying exponents with the same base the exponents are added
 
2. Quotient rule
- when dividing exponents with the same base the exponents are subtracted 
 
3. Power to Power rule
- when raising an exponent to another exponent you must multiply them
 
4. Negative exponent rule
- when an exponent is raised to a negative power the base is moved to the denominator and the sign of the exponent changes 
 
5. Zero power rule
- any number raised to the power of 0 = 1
 
In this context we are finding what is equivalent to 6^8 x 6^(-4)
- using the product rule, the base is 6 in both cases so we add the exponents: 8 + (-4) = 4
 - now we find what is equivalent to 6^4
 
 - this is equivalent 
 - not equivalent 
 - not equivalent 
 - not equivalent 
 - not equivalent 
 - this is equivalent 
The first and last options are equivalent to 6^8 x 6^(-4)