Solve the Equation $$x ^ { 4 } - 16 x ^ { 2 } - 225 = 0$$

question 35

Multiple Choice

Solve the equation.
- $$x ^ { 4 } - 16 x ^ { 2 } - 225 = 0$$

• A) \(\{ - 5,5 , - 3,3 \}\)
• B) \(\{ - 25,25 , - 9 i , 9 i \}\)
• C) \(\{ - 5,5 , - 3 i , 3 i \}\)
• D) \(\{ - 3,3 , - 5 i , 5 i \}\)

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