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Simplifying x2 + -16x = 56 Reorder the terms: -16x + x2 = 56 Solving -16x + x2 = 56 Solving for variable 'x'. Reorder the terms: -56 + -16x + x2 = 56 + -56 Combine like terms: 56 + -56 = 0 -56 + -16x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '56' to each side of the equation. -56 + -16x + 56 + x2 = 0 + 56 Reorder the terms: -56 + 56 + -16x + x2 = 0 + 56 Combine like terms: -56 + 56 = 0 0 + -16x + x2 = 0 + 56 -16x + x2 = 0 + 56 Combine like terms: 0 + 56 = 56 -16x + x2 = 56 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 = 56 + 64 Reorder the terms: 64 + -16x + x2 = 56 + 64 Combine like terms: 56 + 64 = 120 64 + -16x + x2 = 120 Factor a perfect square on the left side: (x + -8)(x + -8) = 120 Calculate the square root of the right side: 10.95445115 Break this problem into two subproblems by setting (x + -8) equal to 10.95445115 and -10.95445115.Subproblem 1
x + -8 = 10.95445115 Simplifying x + -8 = 10.95445115 Reorder the terms: -8 + x = 10.95445115 Solving -8 + x = 10.95445115 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 = 10.95445115 + 8 Combine like terms: -8 + 8 = 0 0 + x = 10.95445115 + 8 x = 10.95445115 + 8 Combine like terms: 10.95445115 + 8 = 18.95445115 x = 18.95445115 Simplifying x = 18.95445115Subproblem 2
x + -8 = -10.95445115 Simplifying x + -8 = -10.95445115 Reorder the terms: -8 + x = -10.95445115 Solving -8 + x = -10.95445115 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 = -10.95445115 + 8 Combine like terms: -8 + 8 = 0 0 + x = -10.95445115 + 8 x = -10.95445115 + 8 Combine like terms: -10.95445115 + 8 = -2.95445115 x = -2.95445115 Simplifying x = -2.95445115Solution
The solution to the problem is based on the solutions from the subproblems. x = {18.95445115, -2.95445115}
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