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Simplifying (x + 8) = 16 + -1x2 + 9x Reorder the terms: (8 + x) = 16 + -1x2 + 9x Remove parenthesis around (8 + x) 8 + x = 16 + -1x2 + 9x Reorder the terms: 8 + x = 16 + 9x + -1x2 Solving 8 + x = 16 + 9x + -1x2 Solving for variable 'x'. Reorder the terms: 8 + -16 + x + -9x + x2 = 16 + 9x + -1x2 + -16 + -9x + x2 Combine like terms: 8 + -16 = -8 -8 + x + -9x + x2 = 16 + 9x + -1x2 + -16 + -9x + x2 Combine like terms: x + -9x = -8x -8 + -8x + x2 = 16 + 9x + -1x2 + -16 + -9x + x2 Reorder the terms: -8 + -8x + x2 = 16 + -16 + 9x + -9x + -1x2 + x2 Combine like terms: 16 + -16 = 0 -8 + -8x + x2 = 0 + 9x + -9x + -1x2 + x2 -8 + -8x + x2 = 9x + -9x + -1x2 + x2 Combine like terms: 9x + -9x = 0 -8 + -8x + x2 = 0 + -1x2 + x2 -8 + -8x + x2 = -1x2 + x2 Combine like terms: -1x2 + x2 = 0 -8 + -8x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '8' to each side of the equation. -8 + -8x + 8 + x2 = 0 + 8 Reorder the terms: -8 + 8 + -8x + x2 = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -8x + x2 = 0 + 8 -8x + x2 = 0 + 8 Combine like terms: 0 + 8 = 8 -8x + x2 = 8 The x term is -8x. Take half its coefficient (-4). Square it (16) and add it to both sides. Add '16' to each side of the equation. -8x + 16 + x2 = 8 + 16 Reorder the terms: 16 + -8x + x2 = 8 + 16 Combine like terms: 8 + 16 = 24 16 + -8x + x2 = 24 Factor a perfect square on the left side: (x + -4)(x + -4) = 24 Calculate the square root of the right side: 4.898979486 Break this problem into two subproblems by setting (x + -4) equal to 4.898979486 and -4.898979486.Subproblem 1
x + -4 = 4.898979486 Simplifying x + -4 = 4.898979486 Reorder the terms: -4 + x = 4.898979486 Solving -4 + x = 4.898979486 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 4.898979486 + 4 Combine like terms: -4 + 4 = 0 0 + x = 4.898979486 + 4 x = 4.898979486 + 4 Combine like terms: 4.898979486 + 4 = 8.898979486 x = 8.898979486 Simplifying x = 8.898979486Subproblem 2
x + -4 = -4.898979486 Simplifying x + -4 = -4.898979486 Reorder the terms: -4 + x = -4.898979486 Solving -4 + x = -4.898979486 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -4.898979486 + 4 Combine like terms: -4 + 4 = 0 0 + x = -4.898979486 + 4 x = -4.898979486 + 4 Combine like terms: -4.898979486 + 4 = -0.898979486 x = -0.898979486 Simplifying x = -0.898979486Solution
The solution to the problem is based on the solutions from the subproblems. x = {8.898979486, -0.898979486}
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