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Simplifying (-7) * x2 + 10x + -12 = 0 Reorder the terms: -12 + 10x + -7x2 = 0 Solving -12 + 10x + -7x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -7 the coefficient of the squared term: Divide each side by '-7'. 1.714285714 + -1.428571429x + x2 = 0 Move the constant term to the right: Add '-1.714285714' to each side of the equation. 1.714285714 + -1.428571429x + -1.714285714 + x2 = 0 + -1.714285714 Reorder the terms: 1.714285714 + -1.714285714 + -1.428571429x + x2 = 0 + -1.714285714 Combine like terms: 1.714285714 + -1.714285714 = 0.000000000 0.000000000 + -1.428571429x + x2 = 0 + -1.714285714 -1.428571429x + x2 = 0 + -1.714285714 Combine like terms: 0 + -1.714285714 = -1.714285714 -1.428571429x + x2 = -1.714285714 The x term is -1.428571429x. Take half its coefficient (-0.7142857145). Square it (0.5102040819) and add it to both sides. Add '0.5102040819' to each side of the equation. -1.428571429x + 0.5102040819 + x2 = -1.714285714 + 0.5102040819 Reorder the terms: 0.5102040819 + -1.428571429x + x2 = -1.714285714 + 0.5102040819 Combine like terms: -1.714285714 + 0.5102040819 = -1.2040816321 0.5102040819 + -1.428571429x + x2 = -1.2040816321 Factor a perfect square on the left side: (x + -0.7142857145)(x + -0.7142857145) = -1.2040816321 Can't calculate square root of the right side. The solution to this equation could not be determined.
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