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Simplifying x = (3x + 2)(x + -10) Reorder the terms: x = (2 + 3x)(x + -10) Reorder the terms: x = (2 + 3x)(-10 + x) Multiply (2 + 3x) * (-10 + x) x = (2(-10 + x) + 3x * (-10 + x)) x = ((-10 * 2 + x * 2) + 3x * (-10 + x)) x = ((-20 + 2x) + 3x * (-10 + x)) x = (-20 + 2x + (-10 * 3x + x * 3x)) x = (-20 + 2x + (-30x + 3x2)) Combine like terms: 2x + -30x = -28x x = (-20 + -28x + 3x2) Solving x = -20 + -28x + 3x2 Solving for variable 'x'. Reorder the terms: 20 + x + 28x + -3x2 = -20 + -28x + 3x2 + 20 + 28x + -3x2 Combine like terms: x + 28x = 29x 20 + 29x + -3x2 = -20 + -28x + 3x2 + 20 + 28x + -3x2 Reorder the terms: 20 + 29x + -3x2 = -20 + 20 + -28x + 28x + 3x2 + -3x2 Combine like terms: -20 + 20 = 0 20 + 29x + -3x2 = 0 + -28x + 28x + 3x2 + -3x2 20 + 29x + -3x2 = -28x + 28x + 3x2 + -3x2 Combine like terms: -28x + 28x = 0 20 + 29x + -3x2 = 0 + 3x2 + -3x2 20 + 29x + -3x2 = 3x2 + -3x2 Combine like terms: 3x2 + -3x2 = 0 20 + 29x + -3x2 = 0 Begin completing the square. Divide all terms by -3 the coefficient of the squared term: Divide each side by '-3'. -6.666666667 + -9.666666667x + x2 = 0 Move the constant term to the right: Add '6.666666667' to each side of the equation. -6.666666667 + -9.666666667x + 6.666666667 + x2 = 0 + 6.666666667 Reorder the terms: -6.666666667 + 6.666666667 + -9.666666667x + x2 = 0 + 6.666666667 Combine like terms: -6.666666667 + 6.666666667 = 0.000000000 0.000000000 + -9.666666667x + x2 = 0 + 6.666666667 -9.666666667x + x2 = 0 + 6.666666667 Combine like terms: 0 + 6.666666667 = 6.666666667 -9.666666667x + x2 = 6.666666667 The x term is -9.666666667x. Take half its coefficient (-4.833333334). Square it (23.36111112) and add it to both sides. Add '23.36111112' to each side of the equation. -9.666666667x + 23.36111112 + x2 = 6.666666667 + 23.36111112 Reorder the terms: 23.36111112 + -9.666666667x + x2 = 6.666666667 + 23.36111112 Combine like terms: 6.666666667 + 23.36111112 = 30.027777787 23.36111112 + -9.666666667x + x2 = 30.027777787 Factor a perfect square on the left side: (x + -4.833333334)(x + -4.833333334) = 30.027777787 Calculate the square root of the right side: 5.479760742 Break this problem into two subproblems by setting (x + -4.833333334) equal to 5.479760742 and -5.479760742.Subproblem 1
x + -4.833333334 = 5.479760742 Simplifying x + -4.833333334 = 5.479760742 Reorder the terms: -4.833333334 + x = 5.479760742 Solving -4.833333334 + x = 5.479760742 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.833333334' to each side of the equation. -4.833333334 + 4.833333334 + x = 5.479760742 + 4.833333334 Combine like terms: -4.833333334 + 4.833333334 = 0.000000000 0.000000000 + x = 5.479760742 + 4.833333334 x = 5.479760742 + 4.833333334 Combine like terms: 5.479760742 + 4.833333334 = 10.313094076 x = 10.313094076 Simplifying x = 10.313094076Subproblem 2
x + -4.833333334 = -5.479760742 Simplifying x + -4.833333334 = -5.479760742 Reorder the terms: -4.833333334 + x = -5.479760742 Solving -4.833333334 + x = -5.479760742 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.833333334' to each side of the equation. -4.833333334 + 4.833333334 + x = -5.479760742 + 4.833333334 Combine like terms: -4.833333334 + 4.833333334 = 0.000000000 0.000000000 + x = -5.479760742 + 4.833333334 x = -5.479760742 + 4.833333334 Combine like terms: -5.479760742 + 4.833333334 = -0.646427408 x = -0.646427408 Simplifying x = -0.646427408Solution
The solution to the problem is based on the solutions from the subproblems. x = {10.313094076, -0.646427408}
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