tolong di jawab kak

[tex] \sqrt{9 \sqrt{27} } = 3 \sqrt{ \sqrt{ {3}^{3} } } = 3 \times {3}^{ \frac{3}{4} } \\ = {3}^{1 + \frac{3}{4} } = {3}^{ \frac{4 + 3}{4} } = {3}^{ \frac{7}{4} } [/tex]
[tex] \sqrt[3]{ {8}^{4} \sqrt{ {y}^{2} } } = \sqrt[3]{ { ({2}^{3} )}^{4} \sqrt{ {y}^{2} } } \\ = \sqrt[3]{ {2}^{12} {y}^{ \frac{2}{2} } } = {2}^{ \frac{12}{3} } {y}^{ \frac{1}{3} } = {2}^{4} {y}^{ \frac{1}{3} } [/tex]