Question

How do I solve this?

Answer 1

solve what?

Answer 2

use pencil and paper and maybe a calculator :)

Answer 3

https://www.khanacademy.org/math/pre-algebra/exponents-radicals/negative-exponents-tutorial/v/negative-exponents

Answer 4

\(\large \bf {
a^{-{\color{red} n}} = \cfrac{1}{a^{\color{red} n}}\qquad thus
\\ \quad \\
\cfrac{8x^{-2}-2x^{-1}}{10x^{-1}-6x^{-2}}\implies \cfrac{8\cdot \frac{1}{x^2}-2\cdot \frac{1}{x^1}}{10\cdot \frac{1}{x^1}-6\cdot \frac{1}{x^2}}\implies \square ?
}\)