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Mapel : Matematika
Bab : Akar dan Pangkat

[tex] (49^{-2} )^{3/4} \\ = ( 49^{-2(3/4)} ) \\ = ( 49^{-3/2} ) \\ = (7^{2} )^{-3/2} \\ = 7^{-3} \\ = \frac{1}{7^{3} } \\ = \frac{1}{343} [/tex]