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Simplifying 3x2 + x = 3.75 Reorder the terms: x + 3x2 = 3.75 Solving x + 3x2 = 3.75 Solving for variable 'x'. Reorder the terms: -3.75 + x + 3x2 = 3.75 + -3.75 Combine like terms: 3.75 + -3.75 = 0.00 -3.75 + x + 3x2 = 0.00 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -1.25 + 0.3333333333x + x2 = 0.00 Move the constant term to the right: Add '1.25' to each side of the equation. -1.25 + 0.3333333333x + 1.25 + x2 = 0.00 + 1.25 Reorder the terms: -1.25 + 1.25 + 0.3333333333x + x2 = 0.00 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + 0.3333333333x + x2 = 0.00 + 1.25 0.3333333333x + x2 = 0.00 + 1.25 Combine like terms: 0.00 + 1.25 = 1.25 0.3333333333x + x2 = 1.25 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. 0.3333333333x + 0.25 + x2 = 1.25 + 0.25 Reorder the terms: 0.25 + 0.3333333333x + x2 = 1.25 + 0.25 Combine like terms: 1.25 + 0.25 = 1.5 0.25 + 0.3333333333x + x2 = 1.5 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 1.5 Calculate the square root of the right side: 1.224744871 Break this problem into two subproblems by setting (x + 0.5) equal to 1.224744871 and -1.224744871.Subproblem 1
x + 0.5 = 1.224744871 Simplifying x + 0.5 = 1.224744871 Reorder the terms: 0.5 + x = 1.224744871 Solving 0.5 + x = 1.224744871 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 = 1.224744871 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.224744871 + -0.5 x = 1.224744871 + -0.5 Combine like terms: 1.224744871 + -0.5 = 0.724744871 x = 0.724744871 Simplifying x = 0.724744871Subproblem 2
x + 0.5 = -1.224744871 Simplifying x + 0.5 = -1.224744871 Reorder the terms: 0.5 + x = -1.224744871 Solving 0.5 + x = -1.224744871 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 = -1.224744871 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.224744871 + -0.5 x = -1.224744871 + -0.5 Combine like terms: -1.224744871 + -0.5 = -1.724744871 x = -1.724744871 Simplifying x = -1.724744871Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.724744871, -1.724744871}
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