Solve the Equation by Making an Appropriate Substitution $$x ^ { 2 / 5 } - x ^ { 1 / 5 } - 2 = 0$$

Multiple Choice

Solve the equation by making an appropriate substitution.
- $$x ^ { 2 / 5 } - x ^ { 1 / 5 } - 2 = 0$$

A) $\{ 32 , - 1 \}$
B) $\{ - 2,1 \}$
C) $\{ - 32,1 \}$
D) $\{ 2 , - 1 \}$