Solve the Equation by Completing the Square $$3 x ^ { 2 } + 21 x = - 36$$

question 128

Multiple Choice

Solve the equation by completing the square.
- $$3 x ^ { 2 } + 21 x = - 36$$

• A) \[\pm \frac { 1 } { 2 }\]
• B) \[- 4 , - 3\]
• C) \[\pm \frac { 1 } { 2 } \mathrm { i }\]
• D)3, 4

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