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Simplifying 5x2 + -2x + -20x + -8 = 0 Reorder the terms: -8 + -2x + -20x + 5x2 = 0 Combine like terms: -2x + -20x = -22x -8 + -22x + 5x2 = 0 Solving -8 + -22x + 5x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -1.6 + -4.4x + x2 = 0 Move the constant term to the right: Add '1.6' to each side of the equation. -1.6 + -4.4x + 1.6 + x2 = 0 + 1.6 Reorder the terms: -1.6 + 1.6 + -4.4x + x2 = 0 + 1.6 Combine like terms: -1.6 + 1.6 = 0.0 0.0 + -4.4x + x2 = 0 + 1.6 -4.4x + x2 = 0 + 1.6 Combine like terms: 0 + 1.6 = 1.6 -4.4x + x2 = 1.6 The x term is -4.4x. Take half its coefficient (-2.2). Square it (4.84) and add it to both sides. Add '4.84' to each side of the equation. -4.4x + 4.84 + x2 = 1.6 + 4.84 Reorder the terms: 4.84 + -4.4x + x2 = 1.6 + 4.84 Combine like terms: 1.6 + 4.84 = 6.44 4.84 + -4.4x + x2 = 6.44 Factor a perfect square on the left side: (x + -2.2)(x + -2.2) = 6.44 Calculate the square root of the right side: 2.537715508 Break this problem into two subproblems by setting (x + -2.2) equal to 2.537715508 and -2.537715508.Subproblem 1
x + -2.2 = 2.537715508 Simplifying x + -2.2 = 2.537715508 Reorder the terms: -2.2 + x = 2.537715508 Solving -2.2 + x = 2.537715508 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.2' to each side of the equation. -2.2 + 2.2 + x = 2.537715508 + 2.2 Combine like terms: -2.2 + 2.2 = 0.0 0.0 + x = 2.537715508 + 2.2 x = 2.537715508 + 2.2 Combine like terms: 2.537715508 + 2.2 = 4.737715508 x = 4.737715508 Simplifying x = 4.737715508Subproblem 2
x + -2.2 = -2.537715508 Simplifying x + -2.2 = -2.537715508 Reorder the terms: -2.2 + x = -2.537715508 Solving -2.2 + x = -2.537715508 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.2' to each side of the equation. -2.2 + 2.2 + x = -2.537715508 + 2.2 Combine like terms: -2.2 + 2.2 = 0.0 0.0 + x = -2.537715508 + 2.2 x = -2.537715508 + 2.2 Combine like terms: -2.537715508 + 2.2 = -0.337715508 x = -0.337715508 Simplifying x = -0.337715508Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.737715508, -0.337715508}
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