Solve the Cubic Equation Using Factoring and the Quadratic Formula $$x ^ { 3 } + 1 = 0$$

question 156

Multiple Choice

Solve the cubic equation using factoring and the quadratic formula.
- $$x ^ { 3 } + 1 = 0$$

• A) \(\{ - 1 , \pm i \}\)
• B) \(\left\{ - 1 , \frac { 1 } { 2 } \pm \frac { \sqrt { 3 } } { 2 } i \right\}\)
• C) \(\{ - 1,1 \pm i \sqrt { 3 } \}\)
• D) \(\{ - 1 , - 1 \pm i \sqrt { 3 } \}\)