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Simplifying V2 + -2V + -40 = 0 Reorder the terms: -40 + -2V + V2 = 0 Solving -40 + -2V + V2 = 0 Solving for variable 'V'. Begin completing the square. Move the constant term to the right: Add '40' to each side of the equation. -40 + -2V + 40 + V2 = 0 + 40 Reorder the terms: -40 + 40 + -2V + V2 = 0 + 40 Combine like terms: -40 + 40 = 0 0 + -2V + V2 = 0 + 40 -2V + V2 = 0 + 40 Combine like terms: 0 + 40 = 40 -2V + V2 = 40 The V term is -2V. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2V + 1 + V2 = 40 + 1 Reorder the terms: 1 + -2V + V2 = 40 + 1 Combine like terms: 40 + 1 = 41 1 + -2V + V2 = 41 Factor a perfect square on the left side: (V + -1)(V + -1) = 41 Calculate the square root of the right side: 6.403124237 Break this problem into two subproblems by setting (V + -1) equal to 6.403124237 and -6.403124237.Subproblem 1
V + -1 = 6.403124237 Simplifying V + -1 = 6.403124237 Reorder the terms: -1 + V = 6.403124237 Solving -1 + V = 6.403124237 Solving for variable 'V'. Move all terms containing V to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + V = 6.403124237 + 1 Combine like terms: -1 + 1 = 0 0 + V = 6.403124237 + 1 V = 6.403124237 + 1 Combine like terms: 6.403124237 + 1 = 7.403124237 V = 7.403124237 Simplifying V = 7.403124237Subproblem 2
V + -1 = -6.403124237 Simplifying V + -1 = -6.403124237 Reorder the terms: -1 + V = -6.403124237 Solving -1 + V = -6.403124237 Solving for variable 'V'. Move all terms containing V to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + V = -6.403124237 + 1 Combine like terms: -1 + 1 = 0 0 + V = -6.403124237 + 1 V = -6.403124237 + 1 Combine like terms: -6.403124237 + 1 = -5.403124237 V = -5.403124237 Simplifying V = -5.403124237Solution
The solution to the problem is based on the solutions from the subproblems. V = {7.403124237, -5.403124237}
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