Question

if x=1/3 find the value of xcube + 1/ xcube.​

Answer 1

$x = \frac{1}{3} \\ \frac{\frac{1}{3}^{3} + 1 }{ \frac{1}{3}^{3} } \\ \frac{ \frac{1}{27} + 1 }{ \frac{1}{3}^{3} } \\ \\ \frac{ \frac{28}{27} }{ \frac{1}{3}^{3} } \\ = \frac{28}{27 \times \frac{1}{27} } \\ = \frac{28}{1} \\ \\ = 28$