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Simplifying 9x2 + 24x + 8 = 0 Reorder the terms: 8 + 24x + 9x2 = 0 Solving 8 + 24x + 9x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 0.8888888889 + 2.666666667x + x2 = 0 Move the constant term to the right: Add '-0.8888888889' to each side of the equation. 0.8888888889 + 2.666666667x + -0.8888888889 + x2 = 0 + -0.8888888889 Reorder the terms: 0.8888888889 + -0.8888888889 + 2.666666667x + x2 = 0 + -0.8888888889 Combine like terms: 0.8888888889 + -0.8888888889 = 0.0000000000 0.0000000000 + 2.666666667x + x2 = 0 + -0.8888888889 2.666666667x + x2 = 0 + -0.8888888889 Combine like terms: 0 + -0.8888888889 = -0.8888888889 2.666666667x + x2 = -0.8888888889 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 = -0.8888888889 + 1.777777780 Reorder the terms: 1.777777780 + 2.666666667x + x2 = -0.8888888889 + 1.777777780 Combine like terms: -0.8888888889 + 1.777777780 = 0.8888888911 1.777777780 + 2.666666667x + x2 = 0.8888888911 Factor a perfect square on the left side: (x + 1.333333334)(x + 1.333333334) = 0.8888888911 Calculate the square root of the right side: 0.942809043 Break this problem into two subproblems by setting (x + 1.333333334) equal to 0.942809043 and -0.942809043.Subproblem 1
x + 1.333333334 = 0.942809043 Simplifying x + 1.333333334 = 0.942809043 Reorder the terms: 1.333333334 + x = 0.942809043 Solving 1.333333334 + x = 0.942809043 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 = 0.942809043 + -1.333333334 Combine like terms: 1.333333334 + -1.333333334 = 0.000000000 0.000000000 + x = 0.942809043 + -1.333333334 x = 0.942809043 + -1.333333334 Combine like terms: 0.942809043 + -1.333333334 = -0.390524291 x = -0.390524291 Simplifying x = -0.390524291Subproblem 2
x + 1.333333334 = -0.942809043 Simplifying x + 1.333333334 = -0.942809043 Reorder the terms: 1.333333334 + x = -0.942809043 Solving 1.333333334 + x = -0.942809043 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 = -0.942809043 + -1.333333334 Combine like terms: 1.333333334 + -1.333333334 = 0.000000000 0.000000000 + x = -0.942809043 + -1.333333334 x = -0.942809043 + -1.333333334 Combine like terms: -0.942809043 + -1.333333334 = -2.276142377 x = -2.276142377 Simplifying x = -2.276142377Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.390524291, -2.276142377}
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