Why does calculator and code for exponents give different answers?

Question

While working on a quiz, I had an exponent problem and the three answers didn’t make sense, yet I had to pick one of them. Am I missing a step, which is preventing me from getting what the code yields?

Answer 1

I am not sure how to use tags unfortunately. I can try to go to an example of my issue and tag that. Is that what you are requesting?