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Simplifying 5x2 + x = 140 Reorder the terms: x + 5x2 = 140 Solving x + 5x2 = 140 Solving for variable 'x'. Reorder the terms: -140 + x + 5x2 = 140 + -140 Combine like terms: 140 + -140 = 0 -140 + x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -28 + 0.2x + x2 = 0 Move the constant term to the right: Add '28' to each side of the equation. -28 + 0.2x + 28 + x2 = 0 + 28 Reorder the terms: -28 + 28 + 0.2x + x2 = 0 + 28 Combine like terms: -28 + 28 = 0 0 + 0.2x + x2 = 0 + 28 0.2x + x2 = 0 + 28 Combine like terms: 0 + 28 = 28 0.2x + x2 = 28 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.2x + 0.25 + x2 = 28 + 0.25 Reorder the terms: 0.25 + 0.2x + x2 = 28 + 0.25 Combine like terms: 28 + 0.25 = 28.25 0.25 + 0.2x + x2 = 28.25 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 28.25 Calculate the square root of the right side: 5.315072906 Break this problem into two subproblems by setting (x + 0.5) equal to 5.315072906 and -5.315072906.Subproblem 1
x + 0.5 = 5.315072906 Simplifying x + 0.5 = 5.315072906 Reorder the terms: 0.5 + x = 5.315072906 Solving 0.5 + x = 5.315072906 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 5.315072906 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 5.315072906 + -0.5 x = 5.315072906 + -0.5 Combine like terms: 5.315072906 + -0.5 = 4.815072906 x = 4.815072906 Simplifying x = 4.815072906Subproblem 2
x + 0.5 = -5.315072906 Simplifying x + 0.5 = -5.315072906 Reorder the terms: 0.5 + x = -5.315072906 Solving 0.5 + x = -5.315072906 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -5.315072906 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -5.315072906 + -0.5 x = -5.315072906 + -0.5 Combine like terms: -5.315072906 + -0.5 = -5.815072906 x = -5.815072906 Simplifying x = -5.815072906Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.815072906, -5.815072906}
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