Solve
- $x ^ { 4 } - 23 x ^ { 2 } = 50$

question 20

Multiple Choice

Solve.
- $x ^ { 4 } - 23 x ^ { 2 } = 50$

• A) \(\{ 5 , \mathrm { i } \sqrt { 2 } \}\)
• B) \(\{ - 25,2 \}\)
• C) \([ - 5,5 , - \mathrm { i } \sqrt { 2 } , \mathrm { i } \sqrt { 2 } \}\)
• D) \(\{ - \sqrt { 2 } , \sqrt { 2 } , - 5 i , 5 i \}\)

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