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

question 48

Multiple Choice

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

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

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