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Simplifying x2 + 16x + -68 = 0 Reorder the terms: -68 + 16x + x2 = 0 Solving -68 + 16x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '68' to each side of the equation. -68 + 16x + 68 + x2 = 0 + 68 Reorder the terms: -68 + 68 + 16x + x2 = 0 + 68 Combine like terms: -68 + 68 = 0 0 + 16x + x2 = 0 + 68 16x + x2 = 0 + 68 Combine like terms: 0 + 68 = 68 16x + x2 = 68 The x term is 16x. Take half its coefficient (8). Square it (64) and add it to both sides. Add '64' to each side of the equation. 16x + 64 + x2 = 68 + 64 Reorder the terms: 64 + 16x + x2 = 68 + 64 Combine like terms: 68 + 64 = 132 64 + 16x + x2 = 132 Factor a perfect square on the left side: (x + 8)(x + 8) = 132 Calculate the square root of the right side: 11.489125293 Break this problem into two subproblems by setting (x + 8) equal to 11.489125293 and -11.489125293.Subproblem 1
x + 8 = 11.489125293 Simplifying x + 8 = 11.489125293 Reorder the terms: 8 + x = 11.489125293 Solving 8 + x = 11.489125293 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 11.489125293 + -8 Combine like terms: 8 + -8 = 0 0 + x = 11.489125293 + -8 x = 11.489125293 + -8 Combine like terms: 11.489125293 + -8 = 3.489125293 x = 3.489125293 Simplifying x = 3.489125293Subproblem 2
x + 8 = -11.489125293 Simplifying x + 8 = -11.489125293 Reorder the terms: 8 + x = -11.489125293 Solving 8 + x = -11.489125293 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = -11.489125293 + -8 Combine like terms: 8 + -8 = 0 0 + x = -11.489125293 + -8 x = -11.489125293 + -8 Combine like terms: -11.489125293 + -8 = -19.489125293 x = -19.489125293 Simplifying x = -19.489125293Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.489125293, -19.489125293}
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