Find the quotient :

[(x2a-4)2/xa+5]3

[(x2a-4)2/xa+5]3 = [x2(2a-4)/xa+5]3 

= [x4a-8/xa+5]3 

= [x4a-8-(a+5)]3 

= [x4a-8-a-5)]3 

=  [x3a-13]3 

= x3(3a-13)

= x9a-39

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