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Simplifying x(3x + -8) = -3 Reorder the terms: x(-8 + 3x) = -3 (-8 * x + 3x * x) = -3 (-8x + 3x2) = -3 Solving -8x + 3x2 = -3 Solving for variable 'x'. Reorder the terms: 3 + -8x + 3x2 = -3 + 3 Combine like terms: -3 + 3 = 0 3 + -8x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 1 + -2.666666667x + x2 = 0 Move the constant term to the right: Add '-1' to each side of the equation. 1 + -2.666666667x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + -2.666666667x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2.666666667x + x2 = 0 + -1 -2.666666667x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -2.666666667x + x2 = -1 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 = -1 + 1.777777780 Reorder the terms: 1.777777780 + -2.666666667x + x2 = -1 + 1.777777780 Combine like terms: -1 + 1.777777780 = 0.77777778 1.777777780 + -2.666666667x + x2 = 0.77777778 Factor a perfect square on the left side: (x + -1.333333334)(x + -1.333333334) = 0.77777778 Calculate the square root of the right side: 0.881917105 Break this problem into two subproblems by setting (x + -1.333333334) equal to 0.881917105 and -0.881917105.Subproblem 1
x + -1.333333334 = 0.881917105 Simplifying x + -1.333333334 = 0.881917105 Reorder the terms: -1.333333334 + x = 0.881917105 Solving -1.333333334 + x = 0.881917105 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 = 0.881917105 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + x = 0.881917105 + 1.333333334 x = 0.881917105 + 1.333333334 Combine like terms: 0.881917105 + 1.333333334 = 2.215250439 x = 2.215250439 Simplifying x = 2.215250439Subproblem 2
x + -1.333333334 = -0.881917105 Simplifying x + -1.333333334 = -0.881917105 Reorder the terms: -1.333333334 + x = -0.881917105 Solving -1.333333334 + x = -0.881917105 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 = -0.881917105 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + x = -0.881917105 + 1.333333334 x = -0.881917105 + 1.333333334 Combine like terms: -0.881917105 + 1.333333334 = 0.451416229 x = 0.451416229 Simplifying x = 0.451416229Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.215250439, 0.451416229}
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