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Simplifying (v2 + -3v + 4) + (-2v2 + 7v + 5) = 0 Reorder the terms: (4 + -3v + v2) + (-2v2 + 7v + 5) = 0 Remove parenthesis around (4 + -3v + v2) 4 + -3v + v2 + (-2v2 + 7v + 5) = 0 Reorder the terms: 4 + -3v + v2 + (5 + 7v + -2v2) = 0 Remove parenthesis around (5 + 7v + -2v2) 4 + -3v + v2 + 5 + 7v + -2v2 = 0 Reorder the terms: 4 + 5 + -3v + 7v + v2 + -2v2 = 0 Combine like terms: 4 + 5 = 9 9 + -3v + 7v + v2 + -2v2 = 0 Combine like terms: -3v + 7v = 4v 9 + 4v + v2 + -2v2 = 0 Combine like terms: v2 + -2v2 = -1v2 9 + 4v + -1v2 = 0 Solving 9 + 4v + -1v2 = 0 Solving for variable 'v'. Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -9 + -4v + v2 = 0 Move the constant term to the right: Add '9' to each side of the equation. -9 + -4v + 9 + v2 = 0 + 9 Reorder the terms: -9 + 9 + -4v + v2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -4v + v2 = 0 + 9 -4v + v2 = 0 + 9 Combine like terms: 0 + 9 = 9 -4v + v2 = 9 The v term is -4v. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4v + 4 + v2 = 9 + 4 Reorder the terms: 4 + -4v + v2 = 9 + 4 Combine like terms: 9 + 4 = 13 4 + -4v + v2 = 13 Factor a perfect square on the left side: (v + -2)(v + -2) = 13 Calculate the square root of the right side: 3.605551275 Break this problem into two subproblems by setting (v + -2) equal to 3.605551275 and -3.605551275.Subproblem 1
v + -2 = 3.605551275 Simplifying v + -2 = 3.605551275 Reorder the terms: -2 + v = 3.605551275 Solving -2 + v = 3.605551275 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + v = 3.605551275 + 2 Combine like terms: -2 + 2 = 0 0 + v = 3.605551275 + 2 v = 3.605551275 + 2 Combine like terms: 3.605551275 + 2 = 5.605551275 v = 5.605551275 Simplifying v = 5.605551275Subproblem 2
v + -2 = -3.605551275 Simplifying v + -2 = -3.605551275 Reorder the terms: -2 + v = -3.605551275 Solving -2 + v = -3.605551275 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + v = -3.605551275 + 2 Combine like terms: -2 + 2 = 0 0 + v = -3.605551275 + 2 v = -3.605551275 + 2 Combine like terms: -3.605551275 + 2 = -1.605551275 v = -1.605551275 Simplifying v = -1.605551275Solution
The solution to the problem is based on the solutions from the subproblems. v = {5.605551275, -1.605551275}
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