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Simplifying x2 + 14x + -55 = 0 Reorder the terms: -55 + 14x + x2 = 0 Solving -55 + 14x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '55' to each side of the equation. -55 + 14x + 55 + x2 = 0 + 55 Reorder the terms: -55 + 55 + 14x + x2 = 0 + 55 Combine like terms: -55 + 55 = 0 0 + 14x + x2 = 0 + 55 14x + x2 = 0 + 55 Combine like terms: 0 + 55 = 55 14x + x2 = 55 The x term is 14x. Take half its coefficient (7). Square it (49) and add it to both sides. Add '49' to each side of the equation. 14x + 49 + x2 = 55 + 49 Reorder the terms: 49 + 14x + x2 = 55 + 49 Combine like terms: 55 + 49 = 104 49 + 14x + x2 = 104 Factor a perfect square on the left side: (x + 7)(x + 7) = 104 Calculate the square root of the right side: 10.198039027 Break this problem into two subproblems by setting (x + 7) equal to 10.198039027 and -10.198039027.Subproblem 1
x + 7 = 10.198039027 Simplifying x + 7 = 10.198039027 Reorder the terms: 7 + x = 10.198039027 Solving 7 + x = 10.198039027 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 10.198039027 + -7 Combine like terms: 7 + -7 = 0 0 + x = 10.198039027 + -7 x = 10.198039027 + -7 Combine like terms: 10.198039027 + -7 = 3.198039027 x = 3.198039027 Simplifying x = 3.198039027Subproblem 2
x + 7 = -10.198039027 Simplifying x + 7 = -10.198039027 Reorder the terms: 7 + x = -10.198039027 Solving 7 + x = -10.198039027 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = -10.198039027 + -7 Combine like terms: 7 + -7 = 0 0 + x = -10.198039027 + -7 x = -10.198039027 + -7 Combine like terms: -10.198039027 + -7 = -17.198039027 x = -17.198039027 Simplifying x = -17.198039027Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.198039027, -17.198039027}
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