Question 637251
 2^5/2 - 2^3/2
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= {{{sqrt(2^5) - sqrt(2^3)}}}
= {{{sqrt(2^4)*sqrt(2) - sqrt(2^2)*sqrt(2)}}}
= {{{4sqrt(2) - 2sqrt(2)}}}
= {{{2sqrt(2)}}}
= {{{2^(3/2)}}}