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Simplifying x2 + 8x + 6 = 25 Reorder the terms: 6 + 8x + x2 = 25 Solving 6 + 8x + x2 = 25 Solving for variable 'x'. Reorder the terms: 6 + -25 + 8x + x2 = 25 + -25 Combine like terms: 6 + -25 = -19 -19 + 8x + x2 = 25 + -25 Combine like terms: 25 + -25 = 0 -19 + 8x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '19' to each side of the equation. -19 + 8x + 19 + x2 = 0 + 19 Reorder the terms: -19 + 19 + 8x + x2 = 0 + 19 Combine like terms: -19 + 19 = 0 0 + 8x + x2 = 0 + 19 8x + x2 = 0 + 19 Combine like terms: 0 + 19 = 19 8x + x2 = 19 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 = 19 + 16 Reorder the terms: 16 + 8x + x2 = 19 + 16 Combine like terms: 19 + 16 = 35 16 + 8x + x2 = 35 Factor a perfect square on the left side: (x + 4)(x + 4) = 35 Calculate the square root of the right side: 5.916079783 Break this problem into two subproblems by setting (x + 4) equal to 5.916079783 and -5.916079783.Subproblem 1
x + 4 = 5.916079783 Simplifying x + 4 = 5.916079783 Reorder the terms: 4 + x = 5.916079783 Solving 4 + x = 5.916079783 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 = 5.916079783 + -4 Combine like terms: 4 + -4 = 0 0 + x = 5.916079783 + -4 x = 5.916079783 + -4 Combine like terms: 5.916079783 + -4 = 1.916079783 x = 1.916079783 Simplifying x = 1.916079783Subproblem 2
x + 4 = -5.916079783 Simplifying x + 4 = -5.916079783 Reorder the terms: 4 + x = -5.916079783 Solving 4 + x = -5.916079783 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 = -5.916079783 + -4 Combine like terms: 4 + -4 = 0 0 + x = -5.916079783 + -4 x = -5.916079783 + -4 Combine like terms: -5.916079783 + -4 = -9.916079783 x = -9.916079783 Simplifying x = -9.916079783Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.916079783, -9.916079783}
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