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Simplifying 5x4 + 6x3 + 7x2 + 8x + 9 = 0 Reorder the terms: 9 + 8x + 7x2 + 6x3 + 5x4 = 0 Solving 9 + 8x + 7x2 + 6x3 + 5x4 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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