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Simplifying 12c2 + -1c + 30 = 0 Reorder the terms: 30 + -1c + 12c2 = 0 Solving 30 + -1c + 12c2 = 0 Solving for variable 'c'. Begin completing the square. Divide all terms by 12 the coefficient of the squared term: Divide each side by '12'. 2.5 + -0.08333333333c + c2 = 0 Move the constant term to the right: Add '-2.5' to each side of the equation. 2.5 + -0.08333333333c + -2.5 + c2 = 0 + -2.5 Reorder the terms: 2.5 + -2.5 + -0.08333333333c + c2 = 0 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + -0.08333333333c + c2 = 0 + -2.5 -0.08333333333c + c2 = 0 + -2.5 Combine like terms: 0 + -2.5 = -2.5 -0.08333333333c + c2 = -2.5 The c term is -0.08333333333c. Take half its coefficient (-0.04166666667). Square it (0.001736111111) and add it to both sides. Add '0.001736111111' to each side of the equation. -0.08333333333c + 0.001736111111 + c2 = -2.5 + 0.001736111111 Reorder the terms: 0.001736111111 + -0.08333333333c + c2 = -2.5 + 0.001736111111 Combine like terms: -2.5 + 0.001736111111 = -2.498263888889 0.001736111111 + -0.08333333333c + c2 = -2.498263888889 Factor a perfect square on the left side: (c + -0.04166666667)(c + -0.04166666667) = -2.498263888889 Can't calculate square root of the right side. The solution to this equation could not be determined.
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