Solve the Equation by Making an Appropriate Substitution $$x ^ { 4 } - 30 x ^ { 2 } + 125 = 0$$

question 181

Multiple Choice

Solve the equation by making an appropriate substitution.
- $$x ^ { 4 } - 30 x ^ { 2 } + 125 = 0$$

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

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