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Simplifying 13c2 + -10c + 8 = 0 Reorder the terms: 8 + -10c + 13c2 = 0 Solving 8 + -10c + 13c2 = 0 Solving for variable 'c'. Begin completing the square. Divide all terms by 13 the coefficient of the squared term: Divide each side by '13'. 0.6153846154 + -0.7692307692c + c2 = 0 Move the constant term to the right: Add '-0.6153846154' to each side of the equation. 0.6153846154 + -0.7692307692c + -0.6153846154 + c2 = 0 + -0.6153846154 Reorder the terms: 0.6153846154 + -0.6153846154 + -0.7692307692c + c2 = 0 + -0.6153846154 Combine like terms: 0.6153846154 + -0.6153846154 = 0.0000000000 0.0000000000 + -0.7692307692c + c2 = 0 + -0.6153846154 -0.7692307692c + c2 = 0 + -0.6153846154 Combine like terms: 0 + -0.6153846154 = -0.6153846154 -0.7692307692c + c2 = -0.6153846154 The c term is -0.7692307692c. Take half its coefficient (-0.3846153846). Square it (0.1479289941) and add it to both sides. Add '0.1479289941' to each side of the equation. -0.7692307692c + 0.1479289941 + c2 = -0.6153846154 + 0.1479289941 Reorder the terms: 0.1479289941 + -0.7692307692c + c2 = -0.6153846154 + 0.1479289941 Combine like terms: -0.6153846154 + 0.1479289941 = -0.4674556213 0.1479289941 + -0.7692307692c + c2 = -0.4674556213 Factor a perfect square on the left side: (c + -0.3846153846)(c + -0.3846153846) = -0.4674556213 Can't calculate square root of the right side. The solution to this equation could not be determined.
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