soal matematika kls 9. tolong bantu pakai cara lngkp ya kak, makasih.

a.
[tex] = (5 \frac{2}{3} )^{2} \\ = (\frac{17}{3} )^{2} \\ = \frac{289}{9} \\ [/tex]
b.
[tex] = (6 \frac{3}{4} )^{3} \\ = ( \frac{27}{4} )^{3} \\ = ( \frac{19683}{64} ) \\ [/tex]