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Simplifying x2 + 12x + 21 = y Reorder the terms: 21 + 12x + x2 = y Solving 21 + 12x + x2 = y Solving for variable 'x'. Combine like terms: y + -1y = 0 21 + 12x + x2 + -1y = 0 The solution to this equation could not be determined.
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