Answer:
1.you use a "carrot" it looks like this ^ so you put 6^3 an that is saying 6 to the power of 3
2. you can also use the symbols option and there is shows little numbers but only gives you the option for the power of 2 and 3
example: 6³
3. click equation option and put the x^2 and then delete the x and put the number or variable and then within the brackets put what the power should be.
Explanation: