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Simplifying 3x2 + 33x + -8.7 = 0 Reorder the terms: -8.7 + 33x + 3x2 = 0 Solving -8.7 + 33x + 3x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -2.9 + 11x + x2 = 0 Move the constant term to the right: Add '2.9' to each side of the equation. -2.9 + 11x + 2.9 + x2 = 0 + 2.9 Reorder the terms: -2.9 + 2.9 + 11x + x2 = 0 + 2.9 Combine like terms: -2.9 + 2.9 = 0.0 0.0 + 11x + x2 = 0 + 2.9 11x + x2 = 0 + 2.9 Combine like terms: 0 + 2.9 = 2.9 11x + x2 = 2.9 The x term is 11x. Take half its coefficient (5.5). Square it (30.25) and add it to both sides. Add '30.25' to each side of the equation. 11x + 30.25 + x2 = 2.9 + 30.25 Reorder the terms: 30.25 + 11x + x2 = 2.9 + 30.25 Combine like terms: 2.9 + 30.25 = 33.15 30.25 + 11x + x2 = 33.15 Factor a perfect square on the left side: (x + 5.5)(x + 5.5) = 33.15 Calculate the square root of the right side: 5.757603668 Break this problem into two subproblems by setting (x + 5.5) equal to 5.757603668 and -5.757603668.Subproblem 1
x + 5.5 = 5.757603668 Simplifying x + 5.5 = 5.757603668 Reorder the terms: 5.5 + x = 5.757603668 Solving 5.5 + x = 5.757603668 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = 5.757603668 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 5.757603668 + -5.5 x = 5.757603668 + -5.5 Combine like terms: 5.757603668 + -5.5 = 0.257603668 x = 0.257603668 Simplifying x = 0.257603668Subproblem 2
x + 5.5 = -5.757603668 Simplifying x + 5.5 = -5.757603668 Reorder the terms: 5.5 + x = -5.757603668 Solving 5.5 + x = -5.757603668 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = -5.757603668 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -5.757603668 + -5.5 x = -5.757603668 + -5.5 Combine like terms: -5.757603668 + -5.5 = -11.257603668 x = -11.257603668 Simplifying x = -11.257603668Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.257603668, -11.257603668}
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