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Simplifying 2r2 + 3r + 3 = 0 Reorder the terms: 3 + 3r + 2r2 = 0 Solving 3 + 3r + 2r2 = 0 Solving for variable 'r'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 1.5 + 1.5r + r2 = 0 Move the constant term to the right: Add '-1.5' to each side of the equation. 1.5 + 1.5r + -1.5 + r2 = 0 + -1.5 Reorder the terms: 1.5 + -1.5 + 1.5r + r2 = 0 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + 1.5r + r2 = 0 + -1.5 1.5r + r2 = 0 + -1.5 Combine like terms: 0 + -1.5 = -1.5 1.5r + r2 = -1.5 The r term is 1.5r. Take half its coefficient (0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. 1.5r + 0.5625 + r2 = -1.5 + 0.5625 Reorder the terms: 0.5625 + 1.5r + r2 = -1.5 + 0.5625 Combine like terms: -1.5 + 0.5625 = -0.9375 0.5625 + 1.5r + r2 = -0.9375 Factor a perfect square on the left side: (r + 0.75)(r + 0.75) = -0.9375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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