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Simplifying -9v(v + 2) + 2v + 6 = 5v + 8 Reorder the terms: -9v(2 + v) + 2v + 6 = 5v + 8 (2 * -9v + v * -9v) + 2v + 6 = 5v + 8 (-18v + -9v2) + 2v + 6 = 5v + 8 Reorder the terms: 6 + -18v + 2v + -9v2 = 5v + 8 Combine like terms: -18v + 2v = -16v 6 + -16v + -9v2 = 5v + 8 Reorder the terms: 6 + -16v + -9v2 = 8 + 5v Solving 6 + -16v + -9v2 = 8 + 5v Solving for variable 'v'. Reorder the terms: 6 + -8 + -16v + -5v + -9v2 = 8 + 5v + -8 + -5v Combine like terms: 6 + -8 = -2 -2 + -16v + -5v + -9v2 = 8 + 5v + -8 + -5v Combine like terms: -16v + -5v = -21v -2 + -21v + -9v2 = 8 + 5v + -8 + -5v Reorder the terms: -2 + -21v + -9v2 = 8 + -8 + 5v + -5v Combine like terms: 8 + -8 = 0 -2 + -21v + -9v2 = 0 + 5v + -5v -2 + -21v + -9v2 = 5v + -5v Combine like terms: 5v + -5v = 0 -2 + -21v + -9v2 = 0 Factor out the Greatest Common Factor (GCF), '-1'. -1(2 + 21v + 9v2) = 0 Ignore the factor -1.Subproblem 1
Set the factor '(2 + 21v + 9v2)' equal to zero and attempt to solve: Simplifying 2 + 21v + 9v2 = 0 Solving 2 + 21v + 9v2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 0.2222222222 + 2.333333333v + v2 = 0 Move the constant term to the right: Add '-0.2222222222' to each side of the equation. 0.2222222222 + 2.333333333v + -0.2222222222 + v2 = 0 + -0.2222222222 Reorder the terms: 0.2222222222 + -0.2222222222 + 2.333333333v + v2 = 0 + -0.2222222222 Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000 0.0000000000 + 2.333333333v + v2 = 0 + -0.2222222222 2.333333333v + v2 = 0 + -0.2222222222 Combine like terms: 0 + -0.2222222222 = -0.2222222222 2.333333333v + v2 = -0.2222222222 The v term is 2.333333333v. Take half its coefficient (1.166666667). Square it (1.361111112) and add it to both sides. Add '1.361111112' to each side of the equation. 2.333333333v + 1.361111112 + v2 = -0.2222222222 + 1.361111112 Reorder the terms: 1.361111112 + 2.333333333v + v2 = -0.2222222222 + 1.361111112 Combine like terms: -0.2222222222 + 1.361111112 = 1.1388888898 1.361111112 + 2.333333333v + v2 = 1.1388888898 Factor a perfect square on the left side: (v + 1.166666667)(v + 1.166666667) = 1.1388888898 Calculate the square root of the right side: 1.067187373 Break this problem into two subproblems by setting (v + 1.166666667) equal to 1.067187373 and -1.067187373.Subproblem 1
v + 1.166666667 = 1.067187373 Simplifying v + 1.166666667 = 1.067187373 Reorder the terms: 1.166666667 + v = 1.067187373 Solving 1.166666667 + v = 1.067187373 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-1.166666667' to each side of the equation. 1.166666667 + -1.166666667 + v = 1.067187373 + -1.166666667 Combine like terms: 1.166666667 + -1.166666667 = 0.000000000 0.000000000 + v = 1.067187373 + -1.166666667 v = 1.067187373 + -1.166666667 Combine like terms: 1.067187373 + -1.166666667 = -0.099479294 v = -0.099479294 Simplifying v = -0.099479294Subproblem 2
v + 1.166666667 = -1.067187373 Simplifying v + 1.166666667 = -1.067187373 Reorder the terms: 1.166666667 + v = -1.067187373 Solving 1.166666667 + v = -1.067187373 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-1.166666667' to each side of the equation. 1.166666667 + -1.166666667 + v = -1.067187373 + -1.166666667 Combine like terms: 1.166666667 + -1.166666667 = 0.000000000 0.000000000 + v = -1.067187373 + -1.166666667 v = -1.067187373 + -1.166666667 Combine like terms: -1.067187373 + -1.166666667 = -2.23385404 v = -2.23385404 Simplifying v = -2.23385404Solution
The solution to the problem is based on the solutions from the subproblems. v = {-0.099479294, -2.23385404}Solution
v = {-0.099479294, -2.23385404}
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