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Simplifying x + 2 = 2x2 + -6x + -16 Reorder the terms: 2 + x = 2x2 + -6x + -16 Reorder the terms: 2 + x = -16 + -6x + 2x2 Solving 2 + x = -16 + -6x + 2x2 Solving for variable 'x'. Reorder the terms: 2 + 16 + x + 6x + -2x2 = -16 + -6x + 2x2 + 16 + 6x + -2x2 Combine like terms: 2 + 16 = 18 18 + x + 6x + -2x2 = -16 + -6x + 2x2 + 16 + 6x + -2x2 Combine like terms: x + 6x = 7x 18 + 7x + -2x2 = -16 + -6x + 2x2 + 16 + 6x + -2x2 Reorder the terms: 18 + 7x + -2x2 = -16 + 16 + -6x + 6x + 2x2 + -2x2 Combine like terms: -16 + 16 = 0 18 + 7x + -2x2 = 0 + -6x + 6x + 2x2 + -2x2 18 + 7x + -2x2 = -6x + 6x + 2x2 + -2x2 Combine like terms: -6x + 6x = 0 18 + 7x + -2x2 = 0 + 2x2 + -2x2 18 + 7x + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 18 + 7x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -9 + -3.5x + x2 = 0 Move the constant term to the right: Add '9' to each side of the equation. -9 + -3.5x + 9 + x2 = 0 + 9 Reorder the terms: -9 + 9 + -3.5x + x2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -3.5x + x2 = 0 + 9 -3.5x + x2 = 0 + 9 Combine like terms: 0 + 9 = 9 -3.5x + x2 = 9 The x term is -3.5x. Take half its coefficient (-1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. -3.5x + 3.0625 + x2 = 9 + 3.0625 Reorder the terms: 3.0625 + -3.5x + x2 = 9 + 3.0625 Combine like terms: 9 + 3.0625 = 12.0625 3.0625 + -3.5x + x2 = 12.0625 Factor a perfect square on the left side: (x + -1.75)(x + -1.75) = 12.0625 Calculate the square root of the right side: 3.473110997 Break this problem into two subproblems by setting (x + -1.75) equal to 3.473110997 and -3.473110997.Subproblem 1
x + -1.75 = 3.473110997 Simplifying x + -1.75 = 3.473110997 Reorder the terms: -1.75 + x = 3.473110997 Solving -1.75 + x = 3.473110997 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = 3.473110997 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = 3.473110997 + 1.75 x = 3.473110997 + 1.75 Combine like terms: 3.473110997 + 1.75 = 5.223110997 x = 5.223110997 Simplifying x = 5.223110997Subproblem 2
x + -1.75 = -3.473110997 Simplifying x + -1.75 = -3.473110997 Reorder the terms: -1.75 + x = -3.473110997 Solving -1.75 + x = -3.473110997 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = -3.473110997 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = -3.473110997 + 1.75 x = -3.473110997 + 1.75 Combine like terms: -3.473110997 + 1.75 = -1.723110997 x = -1.723110997 Simplifying x = -1.723110997Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.223110997, -1.723110997}
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