Question 1098987
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Your numerator is  {{{(4/x)+(2/x^2)}}}.


Multiply it by {{{x^2}}}. You will get  (4x + 2) = 2*(2x+1).         


Your denominator is  {{{(2+1/x)}}}.


Multiply it by {{{x^2}}}. You will get  {{{2x^2 +x}}} = x*(2x+1).     


Now your expression is {{{(2*(2x+1))/(x*(2x+1))}}} = {{{2/x}}}.


Do you need more explanations or these are just enough ?
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