Question 853704
{{{w(2)=sqrt(2+7)=sqrt(9)=3}}}
{{{u(w(2))=u(3)=3^2+5=9+5=14}}}
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{{{u(2)=2^2+5=4+5=9}}}
{{{w(u(2))=sqrt(9+7)=sqrt(16)=4}}}