Use the quadratic formula to solve the quadratic equation.
-$2 z ^ { 2 } - 9 z = \frac { 1 } { 2 }$
A) $z = \frac { - 9 \pm \sqrt { 77 } } { 4 }$
B) $z = \frac { 9 \pm \sqrt { 77 } } { 4 }$
C) $z = \frac { - 9 \pm \sqrt { 85 } } { 4 }$
D) $z = \frac { 9 \pm \sqrt { 85 } } { 4 }$

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The Answer of Use the quadratic formula to solve the quadratic equation.
-$2 z ^ { 2 } - 9 z = \frac { 1 } { 2 }$
A) $z = \frac { - 9 \pm \sqrt { 77 } } { 4 }$
B) $z = \frac { 9 \pm \sqrt { 77 } } { 4 }$
C) $z = \frac { - 9 \pm \sqrt { 85 } } { 4 }$
D) $z = \frac { 9 \pm \sqrt { 85 } } { 4 }$

Use the Quadratic Formula to Solve the Quadratic Equation 2z2−9z=122 z ^ { 2 } - 9 z = \frac { 1 } { 2 }2z2−9z=21​

Use the Quadratic Formula to Solve the Quadratic Equation $2 z ^ { 2 } - 9 z = \frac { 1 } { 2 }$