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Simplifying 0.25(0.6 + 2x) = (0.2 + -1x)(0.4 + -1x) (0.6 * 0.25 + 2x * 0.25) = (0.2 + -1x)(0.4 + -1x) (0.15 + 0.5x) = (0.2 + -1x)(0.4 + -1x) Multiply (0.2 + -1x) * (0.4 + -1x) 0.15 + 0.5x = (0.2(0.4 + -1x) + -1x * (0.4 + -1x)) 0.15 + 0.5x = ((0.4 * 0.2 + -1x * 0.2) + -1x * (0.4 + -1x)) 0.15 + 0.5x = ((0.08 + -0.2x) + -1x * (0.4 + -1x)) 0.15 + 0.5x = (0.08 + -0.2x + (0.4 * -1x + -1x * -1x)) 0.15 + 0.5x = (0.08 + -0.2x + (-0.4x + 1x2)) Combine like terms: -0.2x + -0.4x = -0.6x 0.15 + 0.5x = (0.08 + -0.6x + 1x2) Solving 0.15 + 0.5x = 0.08 + -0.6x + 1x2 Solving for variable 'x'. Reorder the terms: 0.15 + -0.08 + 0.5x + 0.6x + -1x2 = 0.08 + -0.6x + 1x2 + -0.08 + 0.6x + -1x2 Combine like terms: 0.15 + -0.08 = 0.07 0.07 + 0.5x + 0.6x + -1x2 = 0.08 + -0.6x + 1x2 + -0.08 + 0.6x + -1x2 Combine like terms: 0.5x + 0.6x = 1.1x 0.07 + 1.1x + -1x2 = 0.08 + -0.6x + 1x2 + -0.08 + 0.6x + -1x2 Reorder the terms: 0.07 + 1.1x + -1x2 = 0.08 + -0.08 + -0.6x + 0.6x + 1x2 + -1x2 Combine like terms: 0.08 + -0.08 = 0.00 0.07 + 1.1x + -1x2 = 0.00 + -0.6x + 0.6x + 1x2 + -1x2 0.07 + 1.1x + -1x2 = -0.6x + 0.6x + 1x2 + -1x2 Combine like terms: -0.6x + 0.6x = 0.0 0.07 + 1.1x + -1x2 = 0.0 + 1x2 + -1x2 0.07 + 1.1x + -1x2 = 1x2 + -1x2 Combine like terms: 1x2 + -1x2 = 0 0.07 + 1.1x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -0.07 + -1.1x + x2 = 0 Move the constant term to the right: Add '0.07' to each side of the equation. -0.07 + -1.1x + 0.07 + x2 = 0 + 0.07 Reorder the terms: -0.07 + 0.07 + -1.1x + x2 = 0 + 0.07 Combine like terms: -0.07 + 0.07 = 0.00 0.00 + -1.1x + x2 = 0 + 0.07 -1.1x + x2 = 0 + 0.07 Combine like terms: 0 + 0.07 = 0.07 -1.1x + x2 = 0.07 The x term is -1.1x. Take half its coefficient (-0.55). Square it (0.3025) and add it to both sides. Add '0.3025' to each side of the equation. -1.1x + 0.3025 + x2 = 0.07 + 0.3025 Reorder the terms: 0.3025 + -1.1x + x2 = 0.07 + 0.3025 Combine like terms: 0.07 + 0.3025 = 0.3725 0.3025 + -1.1x + x2 = 0.3725 Factor a perfect square on the left side: (x + -0.55)(x + -0.55) = 0.3725 Calculate the square root of the right side: 0.610327781 Break this problem into two subproblems by setting (x + -0.55) equal to 0.610327781 and -0.610327781.Subproblem 1
x + -0.55 = 0.610327781 Simplifying x + -0.55 = 0.610327781 Reorder the terms: -0.55 + x = 0.610327781 Solving -0.55 + x = 0.610327781 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.55' to each side of the equation. -0.55 + 0.55 + x = 0.610327781 + 0.55 Combine like terms: -0.55 + 0.55 = 0.00 0.00 + x = 0.610327781 + 0.55 x = 0.610327781 + 0.55 Combine like terms: 0.610327781 + 0.55 = 1.160327781 x = 1.160327781 Simplifying x = 1.160327781Subproblem 2
x + -0.55 = -0.610327781 Simplifying x + -0.55 = -0.610327781 Reorder the terms: -0.55 + x = -0.610327781 Solving -0.55 + x = -0.610327781 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.55' to each side of the equation. -0.55 + 0.55 + x = -0.610327781 + 0.55 Combine like terms: -0.55 + 0.55 = 0.00 0.00 + x = -0.610327781 + 0.55 x = -0.610327781 + 0.55 Combine like terms: -0.610327781 + 0.55 = -0.060327781 x = -0.060327781 Simplifying x = -0.060327781Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.160327781, -0.060327781}
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