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Simplifying 5x3 + 21x2 + -21x + 5 = 0 Reorder the terms: 5 + -21x + 21x2 + 5x3 = 0 Solving 5 + -21x + 21x2 + 5x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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