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Simplifying 18 + 3x2 + -1x = 0 Reorder the terms: 18 + -1x + 3x2 = 0 Solving 18 + -1x + 3x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 6 + -0.3333333333x + x2 = 0 Move the constant term to the right: Add '-6' to each side of the equation. 6 + -0.3333333333x + -6 + x2 = 0 + -6 Reorder the terms: 6 + -6 + -0.3333333333x + x2 = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -0.3333333333x + x2 = 0 + -6 -0.3333333333x + x2 = 0 + -6 Combine like terms: 0 + -6 = -6 -0.3333333333x + x2 = -6 The x term is -0.3333333333x. Take half its coefficient (-0.1666666667). Square it (0.02777777779) and add it to both sides. Add '0.02777777779' to each side of the equation. -0.3333333333x + 0.02777777779 + x2 = -6 + 0.02777777779 Reorder the terms: 0.02777777779 + -0.3333333333x + x2 = -6 + 0.02777777779 Combine like terms: -6 + 0.02777777779 = -5.97222222221 0.02777777779 + -0.3333333333x + x2 = -5.97222222221 Factor a perfect square on the left side: (x + -0.1666666667)(x + -0.1666666667) = -5.97222222221 Can't calculate square root of the right side. The solution to this equation could not be determined.
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