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Simplifying 11(-1x + -7) = 3x(-5x + -6) Reorder the terms: 11(-7 + -1x) = 3x(-5x + -6) (-7 * 11 + -1x * 11) = 3x(-5x + -6) (-77 + -11x) = 3x(-5x + -6) Reorder the terms: -77 + -11x = 3x(-6 + -5x) -77 + -11x = (-6 * 3x + -5x * 3x) -77 + -11x = (-18x + -15x2) Solving -77 + -11x = -18x + -15x2 Solving for variable 'x'. Combine like terms: -11x + 18x = 7x -77 + 7x + 15x2 = -18x + -15x2 + 18x + 15x2 Reorder the terms: -77 + 7x + 15x2 = -18x + 18x + -15x2 + 15x2 Combine like terms: -18x + 18x = 0 -77 + 7x + 15x2 = 0 + -15x2 + 15x2 -77 + 7x + 15x2 = -15x2 + 15x2 Combine like terms: -15x2 + 15x2 = 0 -77 + 7x + 15x2 = 0 Begin completing the square. Divide all terms by 15 the coefficient of the squared term: Divide each side by '15'. -5.133333333 + 0.4666666667x + x2 = 0 Move the constant term to the right: Add '5.133333333' to each side of the equation. -5.133333333 + 0.4666666667x + 5.133333333 + x2 = 0 + 5.133333333 Reorder the terms: -5.133333333 + 5.133333333 + 0.4666666667x + x2 = 0 + 5.133333333 Combine like terms: -5.133333333 + 5.133333333 = 0.000000000 0.000000000 + 0.4666666667x + x2 = 0 + 5.133333333 0.4666666667x + x2 = 0 + 5.133333333 Combine like terms: 0 + 5.133333333 = 5.133333333 0.4666666667x + x2 = 5.133333333 The x term is 0.4666666667x. Take half its coefficient (0.2333333334). Square it (0.05444444448) and add it to both sides. Add '0.05444444448' to each side of the equation. 0.4666666667x + 0.05444444448 + x2 = 5.133333333 + 0.05444444448 Reorder the terms: 0.05444444448 + 0.4666666667x + x2 = 5.133333333 + 0.05444444448 Combine like terms: 5.133333333 + 0.05444444448 = 5.18777777748 0.05444444448 + 0.4666666667x + x2 = 5.18777777748 Factor a perfect square on the left side: (x + 0.2333333334)(x + 0.2333333334) = 5.18777777748 Calculate the square root of the right side: 2.277669374 Break this problem into two subproblems by setting (x + 0.2333333334) equal to 2.277669374 and -2.277669374.Subproblem 1
x + 0.2333333334 = 2.277669374 Simplifying x + 0.2333333334 = 2.277669374 Reorder the terms: 0.2333333334 + x = 2.277669374 Solving 0.2333333334 + x = 2.277669374 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2333333334' to each side of the equation. 0.2333333334 + -0.2333333334 + x = 2.277669374 + -0.2333333334 Combine like terms: 0.2333333334 + -0.2333333334 = 0.0000000000 0.0000000000 + x = 2.277669374 + -0.2333333334 x = 2.277669374 + -0.2333333334 Combine like terms: 2.277669374 + -0.2333333334 = 2.0443360406 x = 2.0443360406 Simplifying x = 2.0443360406Subproblem 2
x + 0.2333333334 = -2.277669374 Simplifying x + 0.2333333334 = -2.277669374 Reorder the terms: 0.2333333334 + x = -2.277669374 Solving 0.2333333334 + x = -2.277669374 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2333333334' to each side of the equation. 0.2333333334 + -0.2333333334 + x = -2.277669374 + -0.2333333334 Combine like terms: 0.2333333334 + -0.2333333334 = 0.0000000000 0.0000000000 + x = -2.277669374 + -0.2333333334 x = -2.277669374 + -0.2333333334 Combine like terms: -2.277669374 + -0.2333333334 = -2.5110027074 x = -2.5110027074 Simplifying x = -2.5110027074Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.0443360406, -2.5110027074}
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