Nilai dri (25) -½ + 2-² - (1/27)-⅓ adalah....

[tex] = \frac{1}{ {25}^{ \frac{1}{2} } + {2}^{2} - { \frac{1}{27} }^{3} } \\ = \frac{1}{( { {5}^{2} })^{ \frac{1}{2} } + 4 - ({\frac{1}{ {3}^{3} })}^{3} } \\ = \frac{1}{5 + 4 - ( { {3}^{ - 3} })^{3} } \\ = \frac{ ({ {3}^{3} })^{3} }{9} = \frac{ {27}^{3}}{9} = \frac{19683}{9} = 2187[/tex]
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