Urgent! Dau coroana!!!

[tex] \frac{75}{19}[/tex] totul la puterea a treia · [tex] \frac{28}{25}[/tex] totul la puterea a treia  = ?

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( 75 / 19 ) ³ x ( 38 / 25 ) ³ = 75³ / 19³ x 38³ / 25³ = ( 75 / 25 )³ x ( 38 / 19 ) ³ =

3³ x 2³ = 27 x 8 = 216

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( 75 / 19 )³ x ( 28 / 25 )³ = 75³ / 19³ x 28³/ 25³ = 75³/ 25³ x 28³ / 19³=

( 75 / 25 ) ³ x 28³ / 19³ = 3³ x 28³ / 19³ = 84³ / 19³ = 592 704 / 6 859 = 86,412