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Simplifying -2x(x + -18) + (x + 3) = x + 14 Reorder the terms: -2x(-18 + x) + (x + 3) = x + 14 (-18 * -2x + x * -2x) + (x + 3) = x + 14 (36x + -2x2) + (x + 3) = x + 14 Reorder the terms: 36x + -2x2 + (3 + x) = x + 14 Remove parenthesis around (3 + x) 36x + -2x2 + 3 + x = x + 14 Reorder the terms: 3 + 36x + x + -2x2 = x + 14 Combine like terms: 36x + x = 37x 3 + 37x + -2x2 = x + 14 Reorder the terms: 3 + 37x + -2x2 = 14 + x Solving 3 + 37x + -2x2 = 14 + x Solving for variable 'x'. Reorder the terms: 3 + -14 + 37x + -1x + -2x2 = 14 + x + -14 + -1x Combine like terms: 3 + -14 = -11 -11 + 37x + -1x + -2x2 = 14 + x + -14 + -1x Combine like terms: 37x + -1x = 36x -11 + 36x + -2x2 = 14 + x + -14 + -1x Reorder the terms: -11 + 36x + -2x2 = 14 + -14 + x + -1x Combine like terms: 14 + -14 = 0 -11 + 36x + -2x2 = 0 + x + -1x -11 + 36x + -2x2 = x + -1x Combine like terms: x + -1x = 0 -11 + 36x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. 5.5 + -18x + x2 = 0 Move the constant term to the right: Add '-5.5' to each side of the equation. 5.5 + -18x + -5.5 + x2 = 0 + -5.5 Reorder the terms: 5.5 + -5.5 + -18x + x2 = 0 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + -18x + x2 = 0 + -5.5 -18x + x2 = 0 + -5.5 Combine like terms: 0 + -5.5 = -5.5 -18x + x2 = -5.5 The x term is -18x. Take half its coefficient (-9). Square it (81) and add it to both sides. Add '81' to each side of the equation. -18x + 81 + x2 = -5.5 + 81 Reorder the terms: 81 + -18x + x2 = -5.5 + 81 Combine like terms: -5.5 + 81 = 75.5 81 + -18x + x2 = 75.5 Factor a perfect square on the left side: (x + -9)(x + -9) = 75.5 Calculate the square root of the right side: 8.689073598 Break this problem into two subproblems by setting (x + -9) equal to 8.689073598 and -8.689073598.Subproblem 1
x + -9 = 8.689073598 Simplifying x + -9 = 8.689073598 Reorder the terms: -9 + x = 8.689073598 Solving -9 + x = 8.689073598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 8.689073598 + 9 Combine like terms: -9 + 9 = 0 0 + x = 8.689073598 + 9 x = 8.689073598 + 9 Combine like terms: 8.689073598 + 9 = 17.689073598 x = 17.689073598 Simplifying x = 17.689073598Subproblem 2
x + -9 = -8.689073598 Simplifying x + -9 = -8.689073598 Reorder the terms: -9 + x = -8.689073598 Solving -9 + x = -8.689073598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = -8.689073598 + 9 Combine like terms: -9 + 9 = 0 0 + x = -8.689073598 + 9 x = -8.689073598 + 9 Combine like terms: -8.689073598 + 9 = 0.310926402 x = 0.310926402 Simplifying x = 0.310926402Solution
The solution to the problem is based on the solutions from the subproblems. x = {17.689073598, 0.310926402}
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