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Simplifying x2 + 14x = -4 Reorder the terms: 14x + x2 = -4 Solving 14x + x2 = -4 Solving for variable 'x'. Reorder the terms: 4 + 14x + x2 = -4 + 4 Combine like terms: -4 + 4 = 0 4 + 14x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-4' to each side of the equation. 4 + 14x + -4 + x2 = 0 + -4 Reorder the terms: 4 + -4 + 14x + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 14x + x2 = 0 + -4 14x + x2 = 0 + -4 Combine like terms: 0 + -4 = -4 14x + x2 = -4 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 = -4 + 49 Reorder the terms: 49 + 14x + x2 = -4 + 49 Combine like terms: -4 + 49 = 45 49 + 14x + x2 = 45 Factor a perfect square on the left side: (x + 7)(x + 7) = 45 Calculate the square root of the right side: 6.708203933 Break this problem into two subproblems by setting (x + 7) equal to 6.708203933 and -6.708203933.Subproblem 1
x + 7 = 6.708203933 Simplifying x + 7 = 6.708203933 Reorder the terms: 7 + x = 6.708203933 Solving 7 + x = 6.708203933 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 = 6.708203933 + -7 Combine like terms: 7 + -7 = 0 0 + x = 6.708203933 + -7 x = 6.708203933 + -7 Combine like terms: 6.708203933 + -7 = -0.291796067 x = -0.291796067 Simplifying x = -0.291796067Subproblem 2
x + 7 = -6.708203933 Simplifying x + 7 = -6.708203933 Reorder the terms: 7 + x = -6.708203933 Solving 7 + x = -6.708203933 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 = -6.708203933 + -7 Combine like terms: 7 + -7 = 0 0 + x = -6.708203933 + -7 x = -6.708203933 + -7 Combine like terms: -6.708203933 + -7 = -13.708203933 x = -13.708203933 Simplifying x = -13.708203933Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.291796067, -13.708203933}
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