Answer :
hello
to solve this question, we can simply use laws of indicies on it
[tex]a^m\times a^n=a^{m+n}[/tex]so going by that, we can use this template to solve our problem
[tex]x^{-6}\times x^2=x^{-6+2}=x^{-4}=\frac{1}{x^4}[/tex]from the calculation above, the answer to this question is 1 / x^4 and this corresponds to option D