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Simplifying (5x + -2)(x + -1) = x(2x + 1) Reorder the terms: (-2 + 5x)(x + -1) = x(2x + 1) Reorder the terms: (-2 + 5x)(-1 + x) = x(2x + 1) Multiply (-2 + 5x) * (-1 + x) (-2(-1 + x) + 5x * (-1 + x)) = x(2x + 1) ((-1 * -2 + x * -2) + 5x * (-1 + x)) = x(2x + 1) ((2 + -2x) + 5x * (-1 + x)) = x(2x + 1) (2 + -2x + (-1 * 5x + x * 5x)) = x(2x + 1) (2 + -2x + (-5x + 5x2)) = x(2x + 1) Combine like terms: -2x + -5x = -7x (2 + -7x + 5x2) = x(2x + 1) Reorder the terms: 2 + -7x + 5x2 = x(1 + 2x) 2 + -7x + 5x2 = (1 * x + 2x * x) 2 + -7x + 5x2 = (1x + 2x2) Solving 2 + -7x + 5x2 = 1x + 2x2 Solving for variable 'x'. Reorder the terms: 2 + -7x + -1x + 5x2 + -2x2 = 1x + 2x2 + -1x + -2x2 Combine like terms: -7x + -1x = -8x 2 + -8x + 5x2 + -2x2 = 1x + 2x2 + -1x + -2x2 Combine like terms: 5x2 + -2x2 = 3x2 2 + -8x + 3x2 = 1x + 2x2 + -1x + -2x2 Reorder the terms: 2 + -8x + 3x2 = 1x + -1x + 2x2 + -2x2 Combine like terms: 1x + -1x = 0 2 + -8x + 3x2 = 0 + 2x2 + -2x2 2 + -8x + 3x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 2 + -8x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 0.6666666667 + -2.666666667x + x2 = 0 Move the constant term to the right: Add '-0.6666666667' to each side of the equation. 0.6666666667 + -2.666666667x + -0.6666666667 + x2 = 0 + -0.6666666667 Reorder the terms: 0.6666666667 + -0.6666666667 + -2.666666667x + x2 = 0 + -0.6666666667 Combine like terms: 0.6666666667 + -0.6666666667 = 0.0000000000 0.0000000000 + -2.666666667x + x2 = 0 + -0.6666666667 -2.666666667x + x2 = 0 + -0.6666666667 Combine like terms: 0 + -0.6666666667 = -0.6666666667 -2.666666667x + x2 = -0.6666666667 The x term is -2.666666667x. Take half its coefficient (-1.333333334). Square it (1.777777780) and add it to both sides. Add '1.777777780' to each side of the equation. -2.666666667x + 1.777777780 + x2 = -0.6666666667 + 1.777777780 Reorder the terms: 1.777777780 + -2.666666667x + x2 = -0.6666666667 + 1.777777780 Combine like terms: -0.6666666667 + 1.777777780 = 1.1111111133 1.777777780 + -2.666666667x + x2 = 1.1111111133 Factor a perfect square on the left side: (x + -1.333333334)(x + -1.333333334) = 1.1111111133 Calculate the square root of the right side: 1.054092554 Break this problem into two subproblems by setting (x + -1.333333334) equal to 1.054092554 and -1.054092554.Subproblem 1
x + -1.333333334 = 1.054092554 Simplifying x + -1.333333334 = 1.054092554 Reorder the terms: -1.333333334 + x = 1.054092554 Solving -1.333333334 + x = 1.054092554 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + x = 1.054092554 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + x = 1.054092554 + 1.333333334 x = 1.054092554 + 1.333333334 Combine like terms: 1.054092554 + 1.333333334 = 2.387425888 x = 2.387425888 Simplifying x = 2.387425888Subproblem 2
x + -1.333333334 = -1.054092554 Simplifying x + -1.333333334 = -1.054092554 Reorder the terms: -1.333333334 + x = -1.054092554 Solving -1.333333334 + x = -1.054092554 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + x = -1.054092554 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + x = -1.054092554 + 1.333333334 x = -1.054092554 + 1.333333334 Combine like terms: -1.054092554 + 1.333333334 = 0.27924078 x = 0.27924078 Simplifying x = 0.27924078Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.387425888, 0.27924078}
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