Solve the Equation After Making an Appropriate Substitution $$x ^ { 2 / 3 } + 2 x ^ { 1 / 3 } - 8 = 0$$

Multiple Choice

Solve the equation after making an appropriate substitution.
- $$x ^ { 2 / 3 } + 2 x ^ { 1 / 3 } - 8 = 0$$

A) $\{ - 8,64 \}$
B) $\{ - 64,8 \}$
C) $\{ - 2,4 \}$
D) $\{ - 4,2 \}$