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Simplifying 9x2 + 3x + -11 + -2 = 3x2 + -4x + -1(27x + -9) Reorder the terms: -11 + -2 + 3x + 9x2 = 3x2 + -4x + -1(27x + -9) Combine like terms: -11 + -2 = -13 -13 + 3x + 9x2 = 3x2 + -4x + -1(27x + -9) Reorder the terms: -13 + 3x + 9x2 = 3x2 + -4x + -1(-9 + 27x) -13 + 3x + 9x2 = 3x2 + -4x + (-9 * -1 + 27x * -1) -13 + 3x + 9x2 = 3x2 + -4x + (9 + -27x) Reorder the terms: -13 + 3x + 9x2 = 9 + -4x + -27x + 3x2 Combine like terms: -4x + -27x = -31x -13 + 3x + 9x2 = 9 + -31x + 3x2 Solving -13 + 3x + 9x2 = 9 + -31x + 3x2 Solving for variable 'x'. Reorder the terms: -13 + -9 + 3x + 31x + 9x2 + -3x2 = 9 + -31x + 3x2 + -9 + 31x + -3x2 Combine like terms: -13 + -9 = -22 -22 + 3x + 31x + 9x2 + -3x2 = 9 + -31x + 3x2 + -9 + 31x + -3x2 Combine like terms: 3x + 31x = 34x -22 + 34x + 9x2 + -3x2 = 9 + -31x + 3x2 + -9 + 31x + -3x2 Combine like terms: 9x2 + -3x2 = 6x2 -22 + 34x + 6x2 = 9 + -31x + 3x2 + -9 + 31x + -3x2 Reorder the terms: -22 + 34x + 6x2 = 9 + -9 + -31x + 31x + 3x2 + -3x2 Combine like terms: 9 + -9 = 0 -22 + 34x + 6x2 = 0 + -31x + 31x + 3x2 + -3x2 -22 + 34x + 6x2 = -31x + 31x + 3x2 + -3x2 Combine like terms: -31x + 31x = 0 -22 + 34x + 6x2 = 0 + 3x2 + -3x2 -22 + 34x + 6x2 = 3x2 + -3x2 Combine like terms: 3x2 + -3x2 = 0 -22 + 34x + 6x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-11 + 17x + 3x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-11 + 17x + 3x2)' equal to zero and attempt to solve: Simplifying -11 + 17x + 3x2 = 0 Solving -11 + 17x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -3.666666667 + 5.666666667x + x2 = 0 Move the constant term to the right: Add '3.666666667' to each side of the equation. -3.666666667 + 5.666666667x + 3.666666667 + x2 = 0 + 3.666666667 Reorder the terms: -3.666666667 + 3.666666667 + 5.666666667x + x2 = 0 + 3.666666667 Combine like terms: -3.666666667 + 3.666666667 = 0.000000000 0.000000000 + 5.666666667x + x2 = 0 + 3.666666667 5.666666667x + x2 = 0 + 3.666666667 Combine like terms: 0 + 3.666666667 = 3.666666667 5.666666667x + x2 = 3.666666667 The x term is 5.666666667x. Take half its coefficient (2.833333334). Square it (8.027777782) and add it to both sides. Add '8.027777782' to each side of the equation. 5.666666667x + 8.027777782 + x2 = 3.666666667 + 8.027777782 Reorder the terms: 8.027777782 + 5.666666667x + x2 = 3.666666667 + 8.027777782 Combine like terms: 3.666666667 + 8.027777782 = 11.694444449 8.027777782 + 5.666666667x + x2 = 11.694444449 Factor a perfect square on the left side: (x + 2.833333334)(x + 2.833333334) = 11.694444449 Calculate the square root of the right side: 3.419714089 Break this problem into two subproblems by setting (x + 2.833333334) equal to 3.419714089 and -3.419714089.Subproblem 1
x + 2.833333334 = 3.419714089 Simplifying x + 2.833333334 = 3.419714089 Reorder the terms: 2.833333334 + x = 3.419714089 Solving 2.833333334 + x = 3.419714089 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.833333334' to each side of the equation. 2.833333334 + -2.833333334 + x = 3.419714089 + -2.833333334 Combine like terms: 2.833333334 + -2.833333334 = 0.000000000 0.000000000 + x = 3.419714089 + -2.833333334 x = 3.419714089 + -2.833333334 Combine like terms: 3.419714089 + -2.833333334 = 0.586380755 x = 0.586380755 Simplifying x = 0.586380755Subproblem 2
x + 2.833333334 = -3.419714089 Simplifying x + 2.833333334 = -3.419714089 Reorder the terms: 2.833333334 + x = -3.419714089 Solving 2.833333334 + x = -3.419714089 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.833333334' to each side of the equation. 2.833333334 + -2.833333334 + x = -3.419714089 + -2.833333334 Combine like terms: 2.833333334 + -2.833333334 = 0.000000000 0.000000000 + x = -3.419714089 + -2.833333334 x = -3.419714089 + -2.833333334 Combine like terms: -3.419714089 + -2.833333334 = -6.253047423 x = -6.253047423 Simplifying x = -6.253047423Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.586380755, -6.253047423}Solution
x = {0.586380755, -6.253047423}
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