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Solve the Equation by Completing the Square 2x2+12x+3=02 x ^ { 2 } + 12 x + 3 = 0

Question 178

Multiple Choice

Solve the equation by completing the square.
- 2x2+12x+3=02 x ^ { 2 } + 12 x + 3 = 0


A) {12302,12+302}\left\{ \frac { - 12 - \sqrt { 30 } } { 2 } , \frac { - 12 + \sqrt { 30 } } { 2 } \right\}
B) {6302,6+302}\left\{ \frac { - 6 - \sqrt { 30 } } { 2 } , \frac { - 6 + \sqrt { 30 } } { 2 } \right\}
C) {6304,6+304}\left\{ \frac { - 6 - \sqrt { 30 } } { 4 } , \frac { - 6 + \sqrt { 30 } } { 4 } \right\}
D) {6422,6+422}\left\{ \frac { - 6 - \sqrt { 42 } } { 2 } , \frac { - 6 + \sqrt { 42 } } { 2 } \right\}

Correct Answer:

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