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Simplifying 4x2 + 11x + -2 = 0 Reorder the terms: -2 + 11x + 4x2 = 0 Solving -2 + 11x + 4x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -0.5 + 2.75x + x2 = 0 Move the constant term to the right: Add '0.5' to each side of the equation. -0.5 + 2.75x + 0.5 + x2 = 0 + 0.5 Reorder the terms: -0.5 + 0.5 + 2.75x + x2 = 0 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + 2.75x + x2 = 0 + 0.5 2.75x + x2 = 0 + 0.5 Combine like terms: 0 + 0.5 = 0.5 2.75x + x2 = 0.5 The x term is 2.75x. Take half its coefficient (1.375). Square it (1.890625) and add it to both sides. Add '1.890625' to each side of the equation. 2.75x + 1.890625 + x2 = 0.5 + 1.890625 Reorder the terms: 1.890625 + 2.75x + x2 = 0.5 + 1.890625 Combine like terms: 0.5 + 1.890625 = 2.390625 1.890625 + 2.75x + x2 = 2.390625 Factor a perfect square on the left side: (x + 1.375)(x + 1.375) = 2.390625 Calculate the square root of the right side: 1.54616461 Break this problem into two subproblems by setting (x + 1.375) equal to 1.54616461 and -1.54616461.Subproblem 1
x + 1.375 = 1.54616461 Simplifying x + 1.375 = 1.54616461 Reorder the terms: 1.375 + x = 1.54616461 Solving 1.375 + x = 1.54616461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.375' to each side of the equation. 1.375 + -1.375 + x = 1.54616461 + -1.375 Combine like terms: 1.375 + -1.375 = 0.000 0.000 + x = 1.54616461 + -1.375 x = 1.54616461 + -1.375 Combine like terms: 1.54616461 + -1.375 = 0.17116461 x = 0.17116461 Simplifying x = 0.17116461Subproblem 2
x + 1.375 = -1.54616461 Simplifying x + 1.375 = -1.54616461 Reorder the terms: 1.375 + x = -1.54616461 Solving 1.375 + x = -1.54616461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.375' to each side of the equation. 1.375 + -1.375 + x = -1.54616461 + -1.375 Combine like terms: 1.375 + -1.375 = 0.000 0.000 + x = -1.54616461 + -1.375 x = -1.54616461 + -1.375 Combine like terms: -1.54616461 + -1.375 = -2.92116461 x = -2.92116461 Simplifying x = -2.92116461Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.17116461, -2.92116461}
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