Perform the indicated operation. State the domain. Show your work.

Question

I don't understand how to solve this or how to find the domain and I would really appreciate any help, thank you :)

5/5x^4 + x/15x^2

Answer 1

5/(5x^4) + x/(15x^2)

= 1/x^4 + x/(15x^2)

= 15/15x^4 +x^3/(15x^4) once you have the denominators equal, just add the numerators

= (x^3 +15)/(15x^4)