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Simplifying (4x + 2) + (2x + -5) = 5(2x + -5)(4x + 2) Reorder the terms: (2 + 4x) + (2x + -5) = 5(2x + -5)(4x + 2) Remove parenthesis around (2 + 4x) 2 + 4x + (2x + -5) = 5(2x + -5)(4x + 2) Reorder the terms: 2 + 4x + (-5 + 2x) = 5(2x + -5)(4x + 2) Remove parenthesis around (-5 + 2x) 2 + 4x + -5 + 2x = 5(2x + -5)(4x + 2) Reorder the terms: 2 + -5 + 4x + 2x = 5(2x + -5)(4x + 2) Combine like terms: 2 + -5 = -3 -3 + 4x + 2x = 5(2x + -5)(4x + 2) Combine like terms: 4x + 2x = 6x -3 + 6x = 5(2x + -5)(4x + 2) Reorder the terms: -3 + 6x = 5(-5 + 2x)(4x + 2) Reorder the terms: -3 + 6x = 5(-5 + 2x)(2 + 4x) Multiply (-5 + 2x) * (2 + 4x) -3 + 6x = 5(-5(2 + 4x) + 2x * (2 + 4x)) -3 + 6x = 5((2 * -5 + 4x * -5) + 2x * (2 + 4x)) -3 + 6x = 5((-10 + -20x) + 2x * (2 + 4x)) -3 + 6x = 5(-10 + -20x + (2 * 2x + 4x * 2x)) -3 + 6x = 5(-10 + -20x + (4x + 8x2)) Combine like terms: -20x + 4x = -16x -3 + 6x = 5(-10 + -16x + 8x2) -3 + 6x = (-10 * 5 + -16x * 5 + 8x2 * 5) -3 + 6x = (-50 + -80x + 40x2) Solving -3 + 6x = -50 + -80x + 40x2 Solving for variable 'x'. Reorder the terms: -3 + 50 + 6x + 80x + -40x2 = -50 + -80x + 40x2 + 50 + 80x + -40x2 Combine like terms: -3 + 50 = 47 47 + 6x + 80x + -40x2 = -50 + -80x + 40x2 + 50 + 80x + -40x2 Combine like terms: 6x + 80x = 86x 47 + 86x + -40x2 = -50 + -80x + 40x2 + 50 + 80x + -40x2 Reorder the terms: 47 + 86x + -40x2 = -50 + 50 + -80x + 80x + 40x2 + -40x2 Combine like terms: -50 + 50 = 0 47 + 86x + -40x2 = 0 + -80x + 80x + 40x2 + -40x2 47 + 86x + -40x2 = -80x + 80x + 40x2 + -40x2 Combine like terms: -80x + 80x = 0 47 + 86x + -40x2 = 0 + 40x2 + -40x2 47 + 86x + -40x2 = 40x2 + -40x2 Combine like terms: 40x2 + -40x2 = 0 47 + 86x + -40x2 = 0 Begin completing the square. Divide all terms by -40 the coefficient of the squared term: Divide each side by '-40'. -1.175 + -2.15x + x2 = 0 Move the constant term to the right: Add '1.175' to each side of the equation. -1.175 + -2.15x + 1.175 + x2 = 0 + 1.175 Reorder the terms: -1.175 + 1.175 + -2.15x + x2 = 0 + 1.175 Combine like terms: -1.175 + 1.175 = 0.000 0.000 + -2.15x + x2 = 0 + 1.175 -2.15x + x2 = 0 + 1.175 Combine like terms: 0 + 1.175 = 1.175 -2.15x + x2 = 1.175 The x term is -2.15x. Take half its coefficient (-1.075). Square it (1.155625) and add it to both sides. Add '1.155625' to each side of the equation. -2.15x + 1.155625 + x2 = 1.175 + 1.155625 Reorder the terms: 1.155625 + -2.15x + x2 = 1.175 + 1.155625 Combine like terms: 1.175 + 1.155625 = 2.330625 1.155625 + -2.15x + x2 = 2.330625 Factor a perfect square on the left side: (x + -1.075)(x + -1.075) = 2.330625 Calculate the square root of the right side: 1.526638464 Break this problem into two subproblems by setting (x + -1.075) equal to 1.526638464 and -1.526638464.Subproblem 1
x + -1.075 = 1.526638464 Simplifying x + -1.075 = 1.526638464 Reorder the terms: -1.075 + x = 1.526638464 Solving -1.075 + x = 1.526638464 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.075' to each side of the equation. -1.075 + 1.075 + x = 1.526638464 + 1.075 Combine like terms: -1.075 + 1.075 = 0.000 0.000 + x = 1.526638464 + 1.075 x = 1.526638464 + 1.075 Combine like terms: 1.526638464 + 1.075 = 2.601638464 x = 2.601638464 Simplifying x = 2.601638464Subproblem 2
x + -1.075 = -1.526638464 Simplifying x + -1.075 = -1.526638464 Reorder the terms: -1.075 + x = -1.526638464 Solving -1.075 + x = -1.526638464 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.075' to each side of the equation. -1.075 + 1.075 + x = -1.526638464 + 1.075 Combine like terms: -1.075 + 1.075 = 0.000 0.000 + x = -1.526638464 + 1.075 x = -1.526638464 + 1.075 Combine like terms: -1.526638464 + 1.075 = -0.451638464 x = -0.451638464 Simplifying x = -0.451638464Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.601638464, -0.451638464}
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