Find the simplest rationalising factor of\[{{5}^{1/3}}+{{5}^{-1/3}}\]

1.	Find the simplest rationalising factor of\[{{5}^{1/3}}+{{5}^{-1/3}}\]
A.	\[{{5}^{2/3}}+1+{{5}^{-2/3}}\]
B.	\[{{5}^{1/3}}-{{5}^{-1/3}}\]
C.	\[{{5}^{2/3}}-1+{{5}^{-2/3}}\]
D.	\[{{5}^{2/3}}+1-{{5}^{-2/3}}\]
Answer» D. \[{{5}^{2/3}}+1-{{5}^{-2/3}}\]

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Find the simplest rationalising factor of\[{{5}^{1/3}}+{{5}^{-1/3}}\]

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