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Simplifying (4r2) + -4r + 17 = 0 Reorder the terms: 17 + -4r + (4r2) = 0 Solving 17 + -4r + (4r2) = 0 Solving for variable 'r'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 4.25 + -1r + r2 = 0 Move the constant term to the right: Add '-4.25' to each side of the equation. 4.25 + -1r + -4.25 + r2 = 0 + -4.25 Reorder the terms: 4.25 + -4.25 + -1r + r2 = 0 + -4.25 Combine like terms: 4.25 + -4.25 = 0.00 0.00 + -1r + r2 = 0 + -4.25 -1r + r2 = 0 + -4.25 Combine like terms: 0 + -4.25 = -4.25 -1r + r2 = -4.25 The r term is -1r. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1r + 0.25 + r2 = -4.25 + 0.25 Reorder the terms: 0.25 + -1r + r2 = -4.25 + 0.25 Combine like terms: -4.25 + 0.25 = -4 0.25 + -1r + r2 = -4 Factor a perfect square on the left side: ((r) + -0.5)((r) + -0.5) = -4 Can't calculate square root of the right side. The solution to this equation could not be determined.
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