1.
[tex]3.6 \times 3.6 = {3.6}^{2} [/tex]
[tex]9 \times 9 \times 9 \times 9 = {9}^{4} [/tex]
[tex] \frac{4}{5} \times \frac{4}{5} \times \frac{4}{5} = {\frac{4}{5}}^{3} [/tex]
I hope I helped you well
