tolong Jawab,dan pake caranya,terima kasih

Soal No. 71...........Jawaban (A)

[tex]\text{Rumus :}\ \sqrt[n]{a^x}=a^ \frac{x}{n} [/tex]

[tex] \sqrt[m]{ \sqrt[n]{a^p} }= \sqrt[m]{a^ \frac{p}{n} }=a^ \frac{p}{mn} [/tex]

Soal No. 72...........Jawaban (D)

[tex]\text{Rumus :}\ a^p\times a^q=a^{(p+q)} \\ \\ =a^ \frac{1}{5} \times a^ \frac{2}{3} \times a^ \frac{4}{5} \\ \\ =a^{(\frac{1}{5}+ \frac{2}{3}+\frac{4}{5})}.....\text{disamakan penyebut dari pangkat} \\ \\ =a^{(\frac{3}{15}+ \frac{10}{15}+\frac{12}{15})} \\ \\ =a^ \frac{25}{15} \\ \\=a^ \frac{5}{3}[/tex]

***Semoga Terbantu***