hello!
Remember the Property of Exponents:-
![\sf{a^{-b)=\displaystyle(1)/(a^b)](https://img.qammunity.org/2023/formulas/mathematics/middle-school/2woi55g9at62pevlc24tu48jnwssmka9iv.png)
Use it:-
![\sf{8x^(-2)](https://img.qammunity.org/2023/formulas/mathematics/middle-school/303w8qa16uahmhtuvxiokiximcgzxiqdtf.png)
According to the property, we should flop the number over:-
![\bigstar{\boxed{\pmb{(1)/(8x^2) }}}](https://img.qammunity.org/2023/formulas/mathematics/middle-school/hdgwgmw6z36dtlt2rgllv3dtkkffq3qxlk.png)
note:-
Hope everything is clear; if you need any explanation/clarification, kindly let me know, and I'll comment and/or edit my answer :)