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Solve the Cubic Equation Using Factoring and the Quadratic Formula $x ^ { 3 } + 8 = 0$

Question 173

Multiple Choice

Solve the cubic equation using factoring and the quadratic formula.
- $x ^ { 3 } + 8 = 0$

A) $\{ - 2,1 \pm i \sqrt { 6 } \}$

B) $\{ - 2,1 \pm \mathrm { i } \sqrt { 3 } \}$

C) $\{ - 2 , \pm 2 i \}$

D) $\{ - 2 , - 1 \pm \sqrt { 5 } \}$

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