Find All Valid Real Roots for the Equation $$x ^ { 8 } = 5 x ^ { 4 } - 4$$

question 105

Multiple Choice

Find all valid real roots for the equation.
- $$x ^ { 8 } = 5 x ^ { 4 } - 4$$

• A) \(x = \pm \sqrt [ 4 ] { 1 } , x = \pm \sqrt [ 4 ] { 4 }\)
• B) \(x = 1 , x = 4\)
• C) \(x = \pm 1 , x = \pm \sqrt [ 4 ] { 4 }\)
• D) \(x = \pm \sqrt [ 4 ] { 1 } , x = 4\)

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