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Simplifying 7x2 + -1x + 84 = 0 Reorder the terms: 84 + -1x + 7x2 = 0 Solving 84 + -1x + 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'. 12 + -0.1428571429x + x2 = 0 Move the constant term to the right: Add '-12' to each side of the equation. 12 + -0.1428571429x + -12 + x2 = 0 + -12 Reorder the terms: 12 + -12 + -0.1428571429x + x2 = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -0.1428571429x + x2 = 0 + -12 -0.1428571429x + x2 = 0 + -12 Combine like terms: 0 + -12 = -12 -0.1428571429x + x2 = -12 The x term is -0.1428571429x. Take half its coefficient (-0.07142857145). Square it (0.005102040819) and add it to both sides. Add '0.005102040819' to each side of the equation. -0.1428571429x + 0.005102040819 + x2 = -12 + 0.005102040819 Reorder the terms: 0.005102040819 + -0.1428571429x + x2 = -12 + 0.005102040819 Combine like terms: -12 + 0.005102040819 = -11.994897959181 0.005102040819 + -0.1428571429x + x2 = -11.994897959181 Factor a perfect square on the left side: (x + -0.07142857145)(x + -0.07142857145) = -11.994897959181 Can't calculate square root of the right side. The solution to this equation could not be determined.
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