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Simplifying (x2 + -6x + 8) + (-2x2 + -4x + 9) = 0 Reorder the terms: (8 + -6x + x2) + (-2x2 + -4x + 9) = 0 Remove parenthesis around (8 + -6x + x2) 8 + -6x + x2 + (-2x2 + -4x + 9) = 0 Reorder the terms: 8 + -6x + x2 + (9 + -4x + -2x2) = 0 Remove parenthesis around (9 + -4x + -2x2) 8 + -6x + x2 + 9 + -4x + -2x2 = 0 Reorder the terms: 8 + 9 + -6x + -4x + x2 + -2x2 = 0 Combine like terms: 8 + 9 = 17 17 + -6x + -4x + x2 + -2x2 = 0 Combine like terms: -6x + -4x = -10x 17 + -10x + x2 + -2x2 = 0 Combine like terms: x2 + -2x2 = -1x2 17 + -10x + -1x2 = 0 Solving 17 + -10x + -1x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -17 + 10x + x2 = 0 Move the constant term to the right: Add '17' to each side of the equation. -17 + 10x + 17 + x2 = 0 + 17 Reorder the terms: -17 + 17 + 10x + x2 = 0 + 17 Combine like terms: -17 + 17 = 0 0 + 10x + x2 = 0 + 17 10x + x2 = 0 + 17 Combine like terms: 0 + 17 = 17 10x + x2 = 17 The x term is 10x. Take half its coefficient (5). Square it (25) and add it to both sides. Add '25' to each side of the equation. 10x + 25 + x2 = 17 + 25 Reorder the terms: 25 + 10x + x2 = 17 + 25 Combine like terms: 17 + 25 = 42 25 + 10x + x2 = 42 Factor a perfect square on the left side: (x + 5)(x + 5) = 42 Calculate the square root of the right side: 6.480740698 Break this problem into two subproblems by setting (x + 5) equal to 6.480740698 and -6.480740698.Subproblem 1
x + 5 = 6.480740698 Simplifying x + 5 = 6.480740698 Reorder the terms: 5 + x = 6.480740698 Solving 5 + x = 6.480740698 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 6.480740698 + -5 Combine like terms: 5 + -5 = 0 0 + x = 6.480740698 + -5 x = 6.480740698 + -5 Combine like terms: 6.480740698 + -5 = 1.480740698 x = 1.480740698 Simplifying x = 1.480740698Subproblem 2
x + 5 = -6.480740698 Simplifying x + 5 = -6.480740698 Reorder the terms: 5 + x = -6.480740698 Solving 5 + x = -6.480740698 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -6.480740698 + -5 Combine like terms: 5 + -5 = 0 0 + x = -6.480740698 + -5 x = -6.480740698 + -5 Combine like terms: -6.480740698 + -5 = -11.480740698 x = -11.480740698 Simplifying x = -11.480740698Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.480740698, -11.480740698}
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