6 Determine the Most Efficient Method to Use When Solving $7 x ^ { 2 } = - 12 x - 3$

question 252

Multiple Choice

6 Determine the Most Efficient Method to Use When Solving a Quadratic Equation
- $7 x ^ { 2 } = - 12 x - 3$

• A) \(\left\{ \frac { - 6 - \sqrt { 15 } } { 7 } , \frac { - 6 + \sqrt { 15 } } { 7 } \right\}\)
• B) \(\left\{ \frac { - 6 - \sqrt { 15 } } { 14 } , \frac { - 6 + \sqrt { 15 } } { 14 } \right\}\)
• C) \(\left\{ \frac { - 12 - \sqrt { 15 } } { 7 } , \frac { - 12 + \sqrt { 15 } } { 7 } \right\}\)
• D) \(\left\{ \frac { - 6 - \sqrt { 57 } } { 7 } , \frac { - 6 + \sqrt { 57 } } { 7 } \right\}\)

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