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Simplifying 6r2 + -3r + 8 = 0 Reorder the terms: 8 + -3r + 6r2 = 0 Solving 8 + -3r + 6r2 = 0 Solving for variable 'r'. Begin completing the square. Divide all terms by 6 the coefficient of the squared term: Divide each side by '6'. 1.333333333 + -0.5r + r2 = 0 Move the constant term to the right: Add '-1.333333333' to each side of the equation. 1.333333333 + -0.5r + -1.333333333 + r2 = 0 + -1.333333333 Reorder the terms: 1.333333333 + -1.333333333 + -0.5r + r2 = 0 + -1.333333333 Combine like terms: 1.333333333 + -1.333333333 = 0.000000000 0.000000000 + -0.5r + r2 = 0 + -1.333333333 -0.5r + r2 = 0 + -1.333333333 Combine like terms: 0 + -1.333333333 = -1.333333333 -0.5r + r2 = -1.333333333 The r term is -0.5r. Take half its coefficient (-0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. -0.5r + 0.0625 + r2 = -1.333333333 + 0.0625 Reorder the terms: 0.0625 + -0.5r + r2 = -1.333333333 + 0.0625 Combine like terms: -1.333333333 + 0.0625 = -1.270833333 0.0625 + -0.5r + r2 = -1.270833333 Factor a perfect square on the left side: (r + -0.25)(r + -0.25) = -1.270833333 Can't calculate square root of the right side. The solution to this equation could not be determined.
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