If $ x=2^{1 / 3}-2^{-1 / 3} $, then $ 2 x^{3}+6 x= $

JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

1 Easy

1 of 1

Application +4 | -1

x=2^{1 / 3}-2^{-1 / 3}

, then

2 x^{3}+6 x=

View answer and explanation

Correct option: C

Option C (3) is correct because cubing the expression for x and simplifying leads to

2x^3 + 6x = 3

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