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Simplifying 2x + x(3x + -18) = 180 Reorder the terms: 2x + x(-18 + 3x) = 180 2x + (-18 * x + 3x * x) = 180 2x + (-18x + 3x2) = 180 Combine like terms: 2x + -18x = -16x -16x + 3x2 = 180 Solving -16x + 3x2 = 180 Solving for variable 'x'. Reorder the terms: -180 + -16x + 3x2 = 180 + -180 Combine like terms: 180 + -180 = 0 -180 + -16x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -60 + -5.333333333x + x2 = 0 Move the constant term to the right: Add '60' to each side of the equation. -60 + -5.333333333x + 60 + x2 = 0 + 60 Reorder the terms: -60 + 60 + -5.333333333x + x2 = 0 + 60 Combine like terms: -60 + 60 = 0 0 + -5.333333333x + x2 = 0 + 60 -5.333333333x + x2 = 0 + 60 Combine like terms: 0 + 60 = 60 -5.333333333x + x2 = 60 The x term is -5.333333333x. Take half its coefficient (-2.666666667). Square it (7.111111113) and add it to both sides. Add '7.111111113' to each side of the equation. -5.333333333x + 7.111111113 + x2 = 60 + 7.111111113 Reorder the terms: 7.111111113 + -5.333333333x + x2 = 60 + 7.111111113 Combine like terms: 60 + 7.111111113 = 67.111111113 7.111111113 + -5.333333333x + x2 = 67.111111113 Factor a perfect square on the left side: (x + -2.666666667)(x + -2.666666667) = 67.111111113 Calculate the square root of the right side: 8.192137152 Break this problem into two subproblems by setting (x + -2.666666667) equal to 8.192137152 and -8.192137152.Subproblem 1
x + -2.666666667 = 8.192137152 Simplifying x + -2.666666667 = 8.192137152 Reorder the terms: -2.666666667 + x = 8.192137152 Solving -2.666666667 + x = 8.192137152 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.666666667' to each side of the equation. -2.666666667 + 2.666666667 + x = 8.192137152 + 2.666666667 Combine like terms: -2.666666667 + 2.666666667 = 0.000000000 0.000000000 + x = 8.192137152 + 2.666666667 x = 8.192137152 + 2.666666667 Combine like terms: 8.192137152 + 2.666666667 = 10.858803819 x = 10.858803819 Simplifying x = 10.858803819Subproblem 2
x + -2.666666667 = -8.192137152 Simplifying x + -2.666666667 = -8.192137152 Reorder the terms: -2.666666667 + x = -8.192137152 Solving -2.666666667 + x = -8.192137152 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.666666667' to each side of the equation. -2.666666667 + 2.666666667 + x = -8.192137152 + 2.666666667 Combine like terms: -2.666666667 + 2.666666667 = 0.000000000 0.000000000 + x = -8.192137152 + 2.666666667 x = -8.192137152 + 2.666666667 Combine like terms: -8.192137152 + 2.666666667 = -5.525470485 x = -5.525470485 Simplifying x = -5.525470485Solution
The solution to the problem is based on the solutions from the subproblems. x = {10.858803819, -5.525470485}
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