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Simplifying 7v2 + -8v + 80 = 0 Reorder the terms: 80 + -8v + 7v2 = 0 Solving 80 + -8v + 7v2 = 0 Solving for variable 'v'. Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. 11.42857143 + -1.142857143v + v2 = 0 Move the constant term to the right: Add '-11.42857143' to each side of the equation. 11.42857143 + -1.142857143v + -11.42857143 + v2 = 0 + -11.42857143 Reorder the terms: 11.42857143 + -11.42857143 + -1.142857143v + v2 = 0 + -11.42857143 Combine like terms: 11.42857143 + -11.42857143 = 0.00000000 0.00000000 + -1.142857143v + v2 = 0 + -11.42857143 -1.142857143v + v2 = 0 + -11.42857143 Combine like terms: 0 + -11.42857143 = -11.42857143 -1.142857143v + v2 = -11.42857143 The v term is -1.142857143v. Take half its coefficient (-0.5714285715). Square it (0.3265306123) and add it to both sides. Add '0.3265306123' to each side of the equation. -1.142857143v + 0.3265306123 + v2 = -11.42857143 + 0.3265306123 Reorder the terms: 0.3265306123 + -1.142857143v + v2 = -11.42857143 + 0.3265306123 Combine like terms: -11.42857143 + 0.3265306123 = -11.1020408177 0.3265306123 + -1.142857143v + v2 = -11.1020408177 Factor a perfect square on the left side: (v + -0.5714285715)(v + -0.5714285715) = -11.1020408177 Can't calculate square root of the right side. The solution to this equation could not be determined.
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