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Simplifying 9x2 + 18x = 22 Reorder the terms: 18x + 9x2 = 22 Solving 18x + 9x2 = 22 Solving for variable 'x'. Reorder the terms: -22 + 18x + 9x2 = 22 + -22 Combine like terms: 22 + -22 = 0 -22 + 18x + 9x2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. -2.444444444 + 2x + x2 = 0 Move the constant term to the right: Add '2.444444444' to each side of the equation. -2.444444444 + 2x + 2.444444444 + x2 = 0 + 2.444444444 Reorder the terms: -2.444444444 + 2.444444444 + 2x + x2 = 0 + 2.444444444 Combine like terms: -2.444444444 + 2.444444444 = 0.000000000 0.000000000 + 2x + x2 = 0 + 2.444444444 2x + x2 = 0 + 2.444444444 Combine like terms: 0 + 2.444444444 = 2.444444444 2x + x2 = 2.444444444 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 2.444444444 + 1 Reorder the terms: 1 + 2x + x2 = 2.444444444 + 1 Combine like terms: 2.444444444 + 1 = 3.444444444 1 + 2x + x2 = 3.444444444 Factor a perfect square on the left side: (x + 1)(x + 1) = 3.444444444 Calculate the square root of the right side: 1.855921454 Break this problem into two subproblems by setting (x + 1) equal to 1.855921454 and -1.855921454.Subproblem 1
x + 1 = 1.855921454 Simplifying x + 1 = 1.855921454 Reorder the terms: 1 + x = 1.855921454 Solving 1 + x = 1.855921454 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.855921454 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.855921454 + -1 x = 1.855921454 + -1 Combine like terms: 1.855921454 + -1 = 0.855921454 x = 0.855921454 Simplifying x = 0.855921454Subproblem 2
x + 1 = -1.855921454 Simplifying x + 1 = -1.855921454 Reorder the terms: 1 + x = -1.855921454 Solving 1 + x = -1.855921454 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.855921454 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.855921454 + -1 x = -1.855921454 + -1 Combine like terms: -1.855921454 + -1 = -2.855921454 x = -2.855921454 Simplifying x = -2.855921454Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.855921454, -2.855921454}
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