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Simplifying x2 + -4.8x + 2 = 0 Reorder the terms: 2 + -4.8x + x2 = 0 Solving 2 + -4.8x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-2' to each side of the equation. 2 + -4.8x + -2 + x2 = 0 + -2 Reorder the terms: 2 + -2 + -4.8x + x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -4.8x + x2 = 0 + -2 -4.8x + x2 = 0 + -2 Combine like terms: 0 + -2 = -2 -4.8x + x2 = -2 The x term is -4.8x. Take half its coefficient (-2.4). Square it (5.76) and add it to both sides. Add '5.76' to each side of the equation. -4.8x + 5.76 + x2 = -2 + 5.76 Reorder the terms: 5.76 + -4.8x + x2 = -2 + 5.76 Combine like terms: -2 + 5.76 = 3.76 5.76 + -4.8x + x2 = 3.76 Factor a perfect square on the left side: (x + -2.4)(x + -2.4) = 3.76 Calculate the square root of the right side: 1.939071943 Break this problem into two subproblems by setting (x + -2.4) equal to 1.939071943 and -1.939071943.Subproblem 1
x + -2.4 = 1.939071943 Simplifying x + -2.4 = 1.939071943 Reorder the terms: -2.4 + x = 1.939071943 Solving -2.4 + x = 1.939071943 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.4' to each side of the equation. -2.4 + 2.4 + x = 1.939071943 + 2.4 Combine like terms: -2.4 + 2.4 = 0.0 0.0 + x = 1.939071943 + 2.4 x = 1.939071943 + 2.4 Combine like terms: 1.939071943 + 2.4 = 4.339071943 x = 4.339071943 Simplifying x = 4.339071943Subproblem 2
x + -2.4 = -1.939071943 Simplifying x + -2.4 = -1.939071943 Reorder the terms: -2.4 + x = -1.939071943 Solving -2.4 + x = -1.939071943 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.4' to each side of the equation. -2.4 + 2.4 + x = -1.939071943 + 2.4 Combine like terms: -2.4 + 2.4 = 0.0 0.0 + x = -1.939071943 + 2.4 x = -1.939071943 + 2.4 Combine like terms: -1.939071943 + 2.4 = 0.460928057 x = 0.460928057 Simplifying x = 0.460928057Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.339071943, 0.460928057}
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