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Simplifying x2 + 1.8x + -0.143 = 0 Reorder the terms: -0.143 + 1.8x + x2 = 0 Solving -0.143 + 1.8x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '0.143' to each side of the equation. -0.143 + 1.8x + 0.143 + x2 = 0 + 0.143 Reorder the terms: -0.143 + 0.143 + 1.8x + x2 = 0 + 0.143 Combine like terms: -0.143 + 0.143 = 0.000 0.000 + 1.8x + x2 = 0 + 0.143 1.8x + x2 = 0 + 0.143 Combine like terms: 0 + 0.143 = 0.143 1.8x + x2 = 0.143 The x term is 1.8x. Take half its coefficient (0.9). Square it (0.81) and add it to both sides. Add '0.81' to each side of the equation. 1.8x + 0.81 + x2 = 0.143 + 0.81 Reorder the terms: 0.81 + 1.8x + x2 = 0.143 + 0.81 Combine like terms: 0.143 + 0.81 = 0.953 0.81 + 1.8x + x2 = 0.953 Factor a perfect square on the left side: (x + 0.9)(x + 0.9) = 0.953 Calculate the square root of the right side: 0.976217189 Break this problem into two subproblems by setting (x + 0.9) equal to 0.976217189 and -0.976217189.Subproblem 1
x + 0.9 = 0.976217189 Simplifying x + 0.9 = 0.976217189 Reorder the terms: 0.9 + x = 0.976217189 Solving 0.9 + x = 0.976217189 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9' to each side of the equation. 0.9 + -0.9 + x = 0.976217189 + -0.9 Combine like terms: 0.9 + -0.9 = 0.0 0.0 + x = 0.976217189 + -0.9 x = 0.976217189 + -0.9 Combine like terms: 0.976217189 + -0.9 = 0.076217189 x = 0.076217189 Simplifying x = 0.076217189Subproblem 2
x + 0.9 = -0.976217189 Simplifying x + 0.9 = -0.976217189 Reorder the terms: 0.9 + x = -0.976217189 Solving 0.9 + x = -0.976217189 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9' to each side of the equation. 0.9 + -0.9 + x = -0.976217189 + -0.9 Combine like terms: 0.9 + -0.9 = 0.0 0.0 + x = -0.976217189 + -0.9 x = -0.976217189 + -0.9 Combine like terms: -0.976217189 + -0.9 = -1.876217189 x = -1.876217189 Simplifying x = -1.876217189Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.076217189, -1.876217189}
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