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Simplifying x2 + -0.9x + -5.2 = 0 Reorder the terms: -5.2 + -0.9x + x2 = 0 Solving -5.2 + -0.9x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '5.2' to each side of the equation. -5.2 + -0.9x + 5.2 + x2 = 0 + 5.2 Reorder the terms: -5.2 + 5.2 + -0.9x + x2 = 0 + 5.2 Combine like terms: -5.2 + 5.2 = 0.0 0.0 + -0.9x + x2 = 0 + 5.2 -0.9x + x2 = 0 + 5.2 Combine like terms: 0 + 5.2 = 5.2 -0.9x + x2 = 5.2 The x term is -0.9x. Take half its coefficient (-0.45). Square it (0.2025) and add it to both sides. Add '0.2025' to each side of the equation. -0.9x + 0.2025 + x2 = 5.2 + 0.2025 Reorder the terms: 0.2025 + -0.9x + x2 = 5.2 + 0.2025 Combine like terms: 5.2 + 0.2025 = 5.4025 0.2025 + -0.9x + x2 = 5.4025 Factor a perfect square on the left side: (x + -0.45)(x + -0.45) = 5.4025 Calculate the square root of the right side: 2.32432786 Break this problem into two subproblems by setting (x + -0.45) equal to 2.32432786 and -2.32432786.Subproblem 1
x + -0.45 = 2.32432786 Simplifying x + -0.45 = 2.32432786 Reorder the terms: -0.45 + x = 2.32432786 Solving -0.45 + x = 2.32432786 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.45' to each side of the equation. -0.45 + 0.45 + x = 2.32432786 + 0.45 Combine like terms: -0.45 + 0.45 = 0.00 0.00 + x = 2.32432786 + 0.45 x = 2.32432786 + 0.45 Combine like terms: 2.32432786 + 0.45 = 2.77432786 x = 2.77432786 Simplifying x = 2.77432786Subproblem 2
x + -0.45 = -2.32432786 Simplifying x + -0.45 = -2.32432786 Reorder the terms: -0.45 + x = -2.32432786 Solving -0.45 + x = -2.32432786 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.45' to each side of the equation. -0.45 + 0.45 + x = -2.32432786 + 0.45 Combine like terms: -0.45 + 0.45 = 0.00 0.00 + x = -2.32432786 + 0.45 x = -2.32432786 + 0.45 Combine like terms: -2.32432786 + 0.45 = -1.87432786 x = -1.87432786 Simplifying x = -1.87432786Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.77432786, -1.87432786}
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