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Simplifying x4 + 7x3 + 13x2 + 7x + -12 = 0 Reorder the terms: -12 + 7x + 13x2 + 7x3 + x4 = 0 Solving -12 + 7x + 13x2 + 7x3 + x4 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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