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Simplifying 3n2 + 9 = -12 Reorder the terms: 9 + 3n2 = -12 Solving 9 + 3n2 = -12 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + 3n2 = -12 + -9 Combine like terms: 9 + -9 = 0 0 + 3n2 = -12 + -9 3n2 = -12 + -9 Combine like terms: -12 + -9 = -21 3n2 = -21 Divide each side by '3'. n2 = -7 Simplifying n2 = -7 Reorder the terms: 7 + n2 = -7 + 7 Combine like terms: -7 + 7 = 0 7 + n2 = 0 The solution to this equation could not be determined.
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