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Simplifying x2 + 11x + -30 = 6 Reorder the terms: -30 + 11x + x2 = 6 Solving -30 + 11x + x2 = 6 Solving for variable 'x'. Reorder the terms: -30 + -6 + 11x + x2 = 6 + -6 Combine like terms: -30 + -6 = -36 -36 + 11x + x2 = 6 + -6 Combine like terms: 6 + -6 = 0 -36 + 11x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '36' to each side of the equation. -36 + 11x + 36 + x2 = 0 + 36 Reorder the terms: -36 + 36 + 11x + x2 = 0 + 36 Combine like terms: -36 + 36 = 0 0 + 11x + x2 = 0 + 36 11x + x2 = 0 + 36 Combine like terms: 0 + 36 = 36 11x + x2 = 36 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 = 36 + 30.25 Reorder the terms: 30.25 + 11x + x2 = 36 + 30.25 Combine like terms: 36 + 30.25 = 66.25 30.25 + 11x + x2 = 66.25 Factor a perfect square on the left side: (x + 5.5)(x + 5.5) = 66.25 Calculate the square root of the right side: 8.139410298 Break this problem into two subproblems by setting (x + 5.5) equal to 8.139410298 and -8.139410298.Subproblem 1
x + 5.5 = 8.139410298 Simplifying x + 5.5 = 8.139410298 Reorder the terms: 5.5 + x = 8.139410298 Solving 5.5 + x = 8.139410298 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 = 8.139410298 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 8.139410298 + -5.5 x = 8.139410298 + -5.5 Combine like terms: 8.139410298 + -5.5 = 2.639410298 x = 2.639410298 Simplifying x = 2.639410298Subproblem 2
x + 5.5 = -8.139410298 Simplifying x + 5.5 = -8.139410298 Reorder the terms: 5.5 + x = -8.139410298 Solving 5.5 + x = -8.139410298 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 = -8.139410298 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -8.139410298 + -5.5 x = -8.139410298 + -5.5 Combine like terms: -8.139410298 + -5.5 = -13.639410298 x = -13.639410298 Simplifying x = -13.639410298Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.639410298, -13.639410298}
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