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Simplifying 3x2 + -18 = 0 Reorder the terms: -18 + 3x2 = 0 Solving -18 + 3x2 = 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 + 3x2 = 0 + 18 Combine like terms: -18 + 18 = 0 0 + 3x2 = 0 + 18 3x2 = 0 + 18 Combine like terms: 0 + 18 = 18 3x2 = 18 Divide each side by '3'. x2 = 6 Simplifying x2 = 6 Take the square root of each side: x = {-2.449489743, 2.449489743}
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