Find All Complex Zeros of the Polynomial Function $$f ( x ) = x ^ { 3 } + 8 x ^ { 2 } - 18 x + 20$$

question 189

Multiple Choice

Find all complex zeros of the polynomial function. Give exact values. List multiple zeros as necessary.
- $$f ( x ) = x ^ { 3 } + 8 x ^ { 2 } - 18 x + 20$$

• A) \(1 + i , 1 - i , - 10\)
• B) \(1 + i , - 10,10\)
• C) \(1 + i , 1 - i , 10\)
• D) \(1 + \mathrm { i } , 1 - \mathrm { i } , 10 \mathrm { i }\)

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