Question

 Given that 310 = 59 049 , what is 3-10 expressed as an exact value?

Answer 1

$x^{-n}=\frac{1}{x^n} \\ \\ 3^{10}=59049 \\ 3^{-10}=\frac{1}{3^{10}}=\frac{1}{59049} \\ \\ \boxed{3^{-10}=\frac{1}{59049}}$