Find All Solutions of the Equation $$\mathrm { x } ^ { 3 } + 8 = 0$$

question 239

Multiple Choice

Find all solutions of the equation. Leave answers in trigonometric form.
- $$\mathrm { x } ^ { 3 } + 8 = 0$$

• A) \(\left\{ 2 \operatorname { cis } 180 ^ { \circ } , 2 \operatorname { cis } 120 ^ { \circ } , 2 \operatorname { cis } 300 ^ { \circ } \right\}\)
• B) \(\left\{ 2 \operatorname { cis } 180 ^ { \circ } , 2 \operatorname { cis } 120 ^ { \circ } , 2 \operatorname { cis } 240 ^ { \circ } \right\}\)
• C) \(\left\{ 2 \operatorname { cis } 180 ^ { \circ } , 2 \operatorname { cis } 60 ^ { \circ } , 2 \operatorname { cis } 300 ^ { \circ } \right\}\)
• D) \(\left\{ 2 \operatorname { cis } 180 ^ { \circ } , 2 \operatorname { cis } 240 ^ { \circ } , 2 \operatorname { cis } 240 ^ { \circ } \right\}\)

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