Use the Zero or Root of Graphing Utility to Find $f ( x ) = x ^ { 4 } = 3 x ^ { 2 } - 5 x ^ { 2 } - 21 x + 22$

question 88

Multiple Choice

Use the zero or root of graphing utility to find the real zeros of the function $f ( x ) = x ^ { 4 } = 3 x ^ { 2 } - 5 x ^ { 2 } - 21 x + 22$ and find the exact values of the remaining zeros.

• A)Real zeros: \(2,3\) Exact zero: \(- 3 \pm \sqrt { 2 } i\)
• B)Real zeros: \(2,3\) Exact zero: \(- 3 - \sqrt { 2 } i\)
• C)Real zeros: \(1,2\) Exact zero: \(3 \pm \sqrt { 2 } i\)
• D)Real zeros: \(1,2\) Exact zero: \(3 + \sqrt { 2 } i\)
• E)Real zeros: \(1,2\) Exact zero: \(- 3 \pm \sqrt { 2 } i\)

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