Question 736210
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The product of two numbers is 16.  Let x be one of the numbers and y the other.  
Express the sum of the numbers as a function of x. 
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<pre>
If one number is x, then the other number is  {{{16/x}}}.


Hence, the sum of the numbers is  (x + {{{16/x}}}).


Thus the function they ask for is  sum(x) = x + {{{16/x}}}.    <U>ANSWER</U>
</pre>

Solved.


Even do not look into the post by @lynnlo, since it is fatally wrong.