In a polynomials equation do you add the exponents if they are different

You can only add exponents if you are multiplying two of the same variable together. For example,


You take them away if you are dividing.


In a polynomial equation, you can add together two of the same variable if they have the same exponent


Or you can take them away in a similar fashion,


But you cannot add two (or more) different exponents,
(it does not get any simpler)

I hope this has answered your question, if not, leave a comment and I'll update the answer.