(81/16)power -3/4 ×[(9/25) power 3/2÷(5/2)power -³]
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(81/16)=(3/2)^4
(9/25) = (3/5)^2
[(3/2)^4]^ -3/4 × [(3/2)^2]^3/2 ÷ (2/5)^3
(3/2)^-3 × (3/2)^3 × (5/2)^3
(2/3)^3 × (3/2)^3 × (5/2)^3
(5/2)^3
Therefore ur answer is (5/2)^3
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