Question 1076664
(4^-1/4 -  16^-3/9) / 2^-5/10
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= (2^-1/2 -  16^-1/3) / 2^-1/2
Multiply by 2^(1/2)
= 1 -  (16^-1/3)*2^(1/2)
= 1 -  (2^-1/3)*8^(-1/3)*2^(1/2)
= 1 -  sqrt(2)/(2^1/3)*8^(1/3)
= 1 -  sqrt(2)/2(2^1/3)

= {{{1 -  sqrt(2)/2root(3,2)}}}
= {{{1 -  root(6,8)/2root(6,4)}}}
= {{{1 -  root(6,2)/2}}}