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Simplifying x + 1(x + 1 + 5) = x(x + 8) Reorder the terms: x + 1(1 + 5 + x) = x(x + 8) Combine like terms: 1 + 5 = 6 x + 1(6 + x) = x(x + 8) x + (6 * 1 + x * 1) = x(x + 8) x + (6 + 1x) = x(x + 8) Reorder the terms: 6 + x + 1x = x(x + 8) Combine like terms: x + 1x = 2x 6 + 2x = x(x + 8) Reorder the terms: 6 + 2x = x(8 + x) 6 + 2x = (8 * x + x * x) 6 + 2x = (8x + x2) Solving 6 + 2x = 8x + x2 Solving for variable 'x'. Combine like terms: 2x + -8x = -6x 6 + -6x + -1x2 = 8x + x2 + -8x + -1x2 Reorder the terms: 6 + -6x + -1x2 = 8x + -8x + x2 + -1x2 Combine like terms: 8x + -8x = 0 6 + -6x + -1x2 = 0 + x2 + -1x2 6 + -6x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 6 + -6x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -6 + 6x + x2 = 0 Move the constant term to the right: Add '6' to each side of the equation. -6 + 6x + 6 + x2 = 0 + 6 Reorder the terms: -6 + 6 + 6x + x2 = 0 + 6 Combine like terms: -6 + 6 = 0 0 + 6x + x2 = 0 + 6 6x + x2 = 0 + 6 Combine like terms: 0 + 6 = 6 6x + x2 = 6 The x term is 6x. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6x + 9 + x2 = 6 + 9 Reorder the terms: 9 + 6x + x2 = 6 + 9 Combine like terms: 6 + 9 = 15 9 + 6x + x2 = 15 Factor a perfect square on the left side: (x + 3)(x + 3) = 15 Calculate the square root of the right side: 3.872983346 Break this problem into two subproblems by setting (x + 3) equal to 3.872983346 and -3.872983346.Subproblem 1
x + 3 = 3.872983346 Simplifying x + 3 = 3.872983346 Reorder the terms: 3 + x = 3.872983346 Solving 3 + x = 3.872983346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 3.872983346 + -3 Combine like terms: 3 + -3 = 0 0 + x = 3.872983346 + -3 x = 3.872983346 + -3 Combine like terms: 3.872983346 + -3 = 0.872983346 x = 0.872983346 Simplifying x = 0.872983346Subproblem 2
x + 3 = -3.872983346 Simplifying x + 3 = -3.872983346 Reorder the terms: 3 + x = -3.872983346 Solving 3 + x = -3.872983346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -3.872983346 + -3 Combine like terms: 3 + -3 = 0 0 + x = -3.872983346 + -3 x = -3.872983346 + -3 Combine like terms: -3.872983346 + -3 = -6.872983346 x = -6.872983346 Simplifying x = -6.872983346Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.872983346, -6.872983346}
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