Solve by the Quadratic Formula $5 x ^ { 2 } - 4 x - 9 = 0$

Multiple Choice

Solve by the quadratic formula. Simplify answers. Use i notation for nonreal complex numbers.
- $5 x ^ { 2 } - 4 x - 9 = 0$

A) $x = \frac { 9 } { 5 } , - 1$
B) $x = \frac { 5 } { 9 } , 1$
C) $x = \frac { 5 } { 9 } , - 1$
D) $x = \frac { 9 } { 5 } , 1$