(jelaskan dengan cara) tolong dibantu ya :))

a.)

[tex]3 {}^{ - 5} \times 3 {}^{3} \div 3 {}^{ - 4} \\ = 3 {}^{ - 5 + 3 - ( - 4)} \\ = 3 {}^{ - 5 + 3 + 4} \\ = 3 {}^{2} \\ = 9[/tex]

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b.)

[tex] \frac{2 {}^{4} \times 2 {}^{2} }{2 {}^{1} \times 2 {}^{5} } \\ = \frac{2 {}^{4 + 2} }{2 {}^{1 + 5} } \\ = \frac{2 {}^{6} }{2 {}^{6} } \\ = 2 {}^{6 - 6} \\ = 2 {}^{0} \\ = 1[/tex]