



 
Hi Stephen, I would work with the numerator first, \[(1+x)^{1/3} 1/3 x (1+x)^{2/3} = (1+x)^{1/3}  \frac{1/3 x}{(1+x)^{2/3}}.\] Express these two terms with the common denominator $(1+x)^{2/3}$ and simplify. Now reintroduce the original denominator by multiplying the simplified numerator by \[\frac{1}{(1+x)^{2/3}}.\] Penny  


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