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Simplifying 0.3x2 + -2x + 3.6 = 0 Reorder the terms: 3.6 + -2x + 0.3x2 = 0 Solving 3.6 + -2x + 0.3x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 0.3 the coefficient of the squared term: Divide each side by '0.3'. 12 + -6.666666667x + x2 = 0 Move the constant term to the right: Add '-12' to each side of the equation. 12 + -6.666666667x + -12 + x2 = 0 + -12 Reorder the terms: 12 + -12 + -6.666666667x + x2 = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -6.666666667x + x2 = 0 + -12 -6.666666667x + x2 = 0 + -12 Combine like terms: 0 + -12 = -12 -6.666666667x + x2 = -12 The x term is -6.666666667x. Take half its coefficient (-3.333333334). Square it (11.11111112) and add it to both sides. Add '11.11111112' to each side of the equation. -6.666666667x + 11.11111112 + x2 = -12 + 11.11111112 Reorder the terms: 11.11111112 + -6.666666667x + x2 = -12 + 11.11111112 Combine like terms: -12 + 11.11111112 = -0.88888888 11.11111112 + -6.666666667x + x2 = -0.88888888 Factor a perfect square on the left side: (x + -3.333333334)(x + -3.333333334) = -0.88888888 Can't calculate square root of the right side. The solution to this equation could not be determined.
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