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Simplifying 2x2 + 7x + -6 = 34 Reorder the terms: -6 + 7x + 2x2 = 34 Solving -6 + 7x + 2x2 = 34 Solving for variable 'x'. Reorder the terms: -6 + -34 + 7x + 2x2 = 34 + -34 Combine like terms: -6 + -34 = -40 -40 + 7x + 2x2 = 34 + -34 Combine like terms: 34 + -34 = 0 -40 + 7x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -20 + 3.5x + x2 = 0 Move the constant term to the right: Add '20' to each side of the equation. -20 + 3.5x + 20 + x2 = 0 + 20 Reorder the terms: -20 + 20 + 3.5x + x2 = 0 + 20 Combine like terms: -20 + 20 = 0 0 + 3.5x + x2 = 0 + 20 3.5x + x2 = 0 + 20 Combine like terms: 0 + 20 = 20 3.5x + x2 = 20 The x term is 3.5x. Take half its coefficient (1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. 3.5x + 3.0625 + x2 = 20 + 3.0625 Reorder the terms: 3.0625 + 3.5x + x2 = 20 + 3.0625 Combine like terms: 20 + 3.0625 = 23.0625 3.0625 + 3.5x + x2 = 23.0625 Factor a perfect square on the left side: (x + 1.75)(x + 1.75) = 23.0625 Calculate the square root of the right side: 4.802343178 Break this problem into two subproblems by setting (x + 1.75) equal to 4.802343178 and -4.802343178.Subproblem 1
x + 1.75 = 4.802343178 Simplifying x + 1.75 = 4.802343178 Reorder the terms: 1.75 + x = 4.802343178 Solving 1.75 + x = 4.802343178 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = 4.802343178 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 4.802343178 + -1.75 x = 4.802343178 + -1.75 Combine like terms: 4.802343178 + -1.75 = 3.052343178 x = 3.052343178 Simplifying x = 3.052343178Subproblem 2
x + 1.75 = -4.802343178 Simplifying x + 1.75 = -4.802343178 Reorder the terms: 1.75 + x = -4.802343178 Solving 1.75 + x = -4.802343178 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = -4.802343178 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = -4.802343178 + -1.75 x = -4.802343178 + -1.75 Combine like terms: -4.802343178 + -1.75 = -6.552343178 x = -6.552343178 Simplifying x = -6.552343178Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.052343178, -6.552343178}
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