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Simplifying 3x(x + -3) + -16 = 2(x + -8) + 8 Reorder the terms: 3x(-3 + x) + -16 = 2(x + -8) + 8 (-3 * 3x + x * 3x) + -16 = 2(x + -8) + 8 (-9x + 3x2) + -16 = 2(x + -8) + 8 Reorder the terms: -16 + -9x + 3x2 = 2(x + -8) + 8 Reorder the terms: -16 + -9x + 3x2 = 2(-8 + x) + 8 -16 + -9x + 3x2 = (-8 * 2 + x * 2) + 8 -16 + -9x + 3x2 = (-16 + 2x) + 8 Reorder the terms: -16 + -9x + 3x2 = -16 + 8 + 2x Combine like terms: -16 + 8 = -8 -16 + -9x + 3x2 = -8 + 2x Solving -16 + -9x + 3x2 = -8 + 2x Solving for variable 'x'. Reorder the terms: -16 + 8 + -9x + -2x + 3x2 = -8 + 2x + 8 + -2x Combine like terms: -16 + 8 = -8 -8 + -9x + -2x + 3x2 = -8 + 2x + 8 + -2x Combine like terms: -9x + -2x = -11x -8 + -11x + 3x2 = -8 + 2x + 8 + -2x Reorder the terms: -8 + -11x + 3x2 = -8 + 8 + 2x + -2x Combine like terms: -8 + 8 = 0 -8 + -11x + 3x2 = 0 + 2x + -2x -8 + -11x + 3x2 = 2x + -2x Combine like terms: 2x + -2x = 0 -8 + -11x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -2.666666667 + -3.666666667x + x2 = 0 Move the constant term to the right: Add '2.666666667' to each side of the equation. -2.666666667 + -3.666666667x + 2.666666667 + x2 = 0 + 2.666666667 Reorder the terms: -2.666666667 + 2.666666667 + -3.666666667x + x2 = 0 + 2.666666667 Combine like terms: -2.666666667 + 2.666666667 = 0.000000000 0.000000000 + -3.666666667x + x2 = 0 + 2.666666667 -3.666666667x + x2 = 0 + 2.666666667 Combine like terms: 0 + 2.666666667 = 2.666666667 -3.666666667x + x2 = 2.666666667 The x term is -3.666666667x. Take half its coefficient (-1.833333334). Square it (3.361111114) and add it to both sides. Add '3.361111114' to each side of the equation. -3.666666667x + 3.361111114 + x2 = 2.666666667 + 3.361111114 Reorder the terms: 3.361111114 + -3.666666667x + x2 = 2.666666667 + 3.361111114 Combine like terms: 2.666666667 + 3.361111114 = 6.027777781 3.361111114 + -3.666666667x + x2 = 6.027777781 Factor a perfect square on the left side: (x + -1.833333334)(x + -1.833333334) = 6.027777781 Calculate the square root of the right side: 2.455153311 Break this problem into two subproblems by setting (x + -1.833333334) equal to 2.455153311 and -2.455153311.Subproblem 1
x + -1.833333334 = 2.455153311 Simplifying x + -1.833333334 = 2.455153311 Reorder the terms: -1.833333334 + x = 2.455153311 Solving -1.833333334 + x = 2.455153311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = 2.455153311 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = 2.455153311 + 1.833333334 x = 2.455153311 + 1.833333334 Combine like terms: 2.455153311 + 1.833333334 = 4.288486645 x = 4.288486645 Simplifying x = 4.288486645Subproblem 2
x + -1.833333334 = -2.455153311 Simplifying x + -1.833333334 = -2.455153311 Reorder the terms: -1.833333334 + x = -2.455153311 Solving -1.833333334 + x = -2.455153311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = -2.455153311 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = -2.455153311 + 1.833333334 x = -2.455153311 + 1.833333334 Combine like terms: -2.455153311 + 1.833333334 = -0.621819977 x = -0.621819977 Simplifying x = -0.621819977Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.288486645, -0.621819977}
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