Answer
$ x^{6}-4$
Work Step by Step
This is a difference of squares, $(a+b)(a-b)=a^{2}-b^{2}$
... $= (x^{3})^{2}-(2)^{2} \quad$... use the rule: $(a^{m})^{n}=a^{mn}$
=$ x^{6}-4$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.