Solve Equations That Are Quadratic in Form
Solve the Equation $$x ^ { - 2 } + 3 x ^ { - 1 } + 2 = 0$$

Multiple Choice

Solve Equations That Are Quadratic in Form
Solve the equation by making an appropriate substitution.
- $$x ^ { - 2 } + 3 x ^ { - 1 } + 2 = 0$$

A) $\left\{ - \frac { 1 } { 2 } , - 1 \right\}$
B) $\left\{ \frac { 1 } { 2 } , 1 \right\}$
C) $\{ 1,2 \}$
D) $\{ - 1 , - 2 \}$