Bu erda qilishimiz kerak bo'lgan narsa buni eksponensial shaklga aylantirish va keyin esda tutingki, biz ko'rsatkichli shaklni qanday baholashni Ratsional ko'rsatkich bo'limida o'rganganmiz.

\[\sqrt[3]{{ - 512}} = {\left( { - 512} \right)^{\frac{1}{3}}} = \require{bbox} \bbox[2pt,border:1px solid black]{{ - 8}}\hspace{0.25in}\hspace{0.25in}\hspace{0.25in}{\mbox{because }}\hspace{0.25in}\,\,\,{\left( { - 8} \right)^3} = - 512\]