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Simplifying 0.12x2 + -2x + 15 = 0 Reorder the terms: 15 + -2x + 0.12x2 = 0 Solving 15 + -2x + 0.12x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 0.12 the coefficient of the squared term: Divide each side by '0.12'. 125 + -16.66666667x + x2 = 0 Move the constant term to the right: Add '-125' to each side of the equation. 125 + -16.66666667x + -125 + x2 = 0 + -125 Reorder the terms: 125 + -125 + -16.66666667x + x2 = 0 + -125 Combine like terms: 125 + -125 = 0 0 + -16.66666667x + x2 = 0 + -125 -16.66666667x + x2 = 0 + -125 Combine like terms: 0 + -125 = -125 -16.66666667x + x2 = -125 The x term is -16.66666667x. Take half its coefficient (-8.333333335). Square it (69.44444447) and add it to both sides. Add '69.44444447' to each side of the equation. -16.66666667x + 69.44444447 + x2 = -125 + 69.44444447 Reorder the terms: 69.44444447 + -16.66666667x + x2 = -125 + 69.44444447 Combine like terms: -125 + 69.44444447 = -55.55555553 69.44444447 + -16.66666667x + x2 = -55.55555553 Factor a perfect square on the left side: (x + -8.333333335)(x + -8.333333335) = -55.55555553 Can't calculate square root of the right side. The solution to this equation could not be determined.
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