Find All the Zeros (Real and Complex)of the Function $f ( x ) = x ^ { 4 } - 12 x ^ { 2 } - 64$

question 36

Multiple Choice

Find all the zeros (real and complex) of the function.
- $f ( x ) = x ^ { 4 } - 12 x ^ { 2 } - 64$

• A) \(- 2 \mathrm { i } , 2 \mathrm { i } , 8 \mathrm { i } , - 8 \mathrm { i }\)
• B) \(- 2 \mathrm { i } , 2 \mathrm { i } , 4 , - 4\)
• C) \(- 2 \mathrm { i } , 2 \mathrm { i } , 4 \mathrm { i } , - 4 \mathrm { i }\)
• D) \(- 2 \mathrm { i } , 2 \mathrm { i } , 8 , - 8\)

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