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Simplifying (-1r + 6) + 3r2 = 0 Reorder the terms: (6 + -1r) + 3r2 = 0 Remove parenthesis around (6 + -1r) 6 + -1r + 3r2 = 0 Solving 6 + -1r + 3r2 = 0 Solving for variable 'r'. Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 2 + -0.3333333333r + r2 = 0 Move the constant term to the right: Add '-2' to each side of the equation. 2 + -0.3333333333r + -2 + r2 = 0 + -2 Reorder the terms: 2 + -2 + -0.3333333333r + r2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -0.3333333333r + r2 = 0 + -2 -0.3333333333r + r2 = 0 + -2 Combine like terms: 0 + -2 = -2 -0.3333333333r + r2 = -2 The r term is -0.3333333333r. 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. -0.3333333333r + 0.02777777779 + r2 = -2 + 0.02777777779 Reorder the terms: 0.02777777779 + -0.3333333333r + r2 = -2 + 0.02777777779 Combine like terms: -2 + 0.02777777779 = -1.97222222221 0.02777777779 + -0.3333333333r + r2 = -1.97222222221 Factor a perfect square on the left side: (r + -0.1666666667)(r + -0.1666666667) = -1.97222222221 Can't calculate square root of the right side. The solution to this equation could not be determined.
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