Question

Simplify the expression where possible. (r^3) -2

Answer 1

$\bf ~~~~~~~~~~~~\textit{negative exponents}\\\\ a^{-n} \implies \cfrac{1}{a^n} \qquad \qquad \cfrac{1}{a^n}\implies a^{-n} \qquad \qquad a^n\implies \cfrac{1}{a^{-n}} \\\\ -------------------------------\\\\ (r^3)^{-2}\implies r^{3\cdot -2}\implies r^{-6}\implies \cfrac{1}{r^6}$