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.

\[\sqrt[4]{{81}} = {81^{\frac{1}{4}}} = \require{bbox} \bbox[2pt,border:1px solid black]{3}\hspace{0.25in}\hspace{0.25in}\hspace{0.25in}{\mbox{because }}\hspace{0.25in}\,\,\,{3^4} = 81\]