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Simplifying x2 + -3x2 + -18 = 0 Reorder the terms: -18 + x2 + -3x2 = 0 Combine like terms: x2 + -3x2 = -2x2 -18 + -2x2 = 0 Solving -18 + -2x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + -2x2 = 0 + 18 Combine like terms: -18 + 18 = 0 0 + -2x2 = 0 + 18 -2x2 = 0 + 18 Combine like terms: 0 + 18 = 18 -2x2 = 18 Divide each side by '-2'. x2 = -9 Simplifying x2 = -9 Reorder the terms: 9 + x2 = -9 + 9 Combine like terms: -9 + 9 = 0 9 + x2 = 0 The solution to this equation could not be determined.
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