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Simplifying 4x3 + 12x2 + 7x + 21 = 0 Reorder the terms: 21 + 7x + 12x2 + 4x3 = 0 Solving 21 + 7x + 12x2 + 4x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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