Solve. check for extraneous solution 2x^4/3 -2 =160?

Como2016-04-05T08:08:06Z

Presentation is INCORRECT so having to take a GUESS at :-
2x^(4/3) - 2 = 160
2x^(4/3) = 162
x^(4/3) = 81
x = 81^(3/4)
x = 27