What are the roots of the equation x⁴ -5x² + 4 = 0? A. 2, -2, 1, -1
B. 2, 1
C. 2, -1, 1
D. 2, -2, 1
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What are the roots of the equation x⁴ -5x² + 4 = 0? A. 2, -2, 1, -1
B. 2, 1
C. 2, -1, 1
D. 2, -2, 1
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