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Simplifying x2 + 12x + -20 = 2 Reorder the terms: -20 + 12x + x2 = 2 Solving -20 + 12x + x2 = 2 Solving for variable 'x'. Reorder the terms: -20 + -2 + 12x + x2 = 2 + -2 Combine like terms: -20 + -2 = -22 -22 + 12x + x2 = 2 + -2 Combine like terms: 2 + -2 = 0 -22 + 12x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '22' to each side of the equation. -22 + 12x + 22 + x2 = 0 + 22 Reorder the terms: -22 + 22 + 12x + x2 = 0 + 22 Combine like terms: -22 + 22 = 0 0 + 12x + x2 = 0 + 22 12x + x2 = 0 + 22 Combine like terms: 0 + 22 = 22 12x + x2 = 22 The x term is 12x. Take half its coefficient (6). Square it (36) and add it to both sides. Add '36' to each side of the equation. 12x + 36 + x2 = 22 + 36 Reorder the terms: 36 + 12x + x2 = 22 + 36 Combine like terms: 22 + 36 = 58 36 + 12x + x2 = 58 Factor a perfect square on the left side: (x + 6)(x + 6) = 58 Calculate the square root of the right side: 7.615773106 Break this problem into two subproblems by setting (x + 6) equal to 7.615773106 and -7.615773106.Subproblem 1
x + 6 = 7.615773106 Simplifying x + 6 = 7.615773106 Reorder the terms: 6 + x = 7.615773106 Solving 6 + x = 7.615773106 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 7.615773106 + -6 Combine like terms: 6 + -6 = 0 0 + x = 7.615773106 + -6 x = 7.615773106 + -6 Combine like terms: 7.615773106 + -6 = 1.615773106 x = 1.615773106 Simplifying x = 1.615773106Subproblem 2
x + 6 = -7.615773106 Simplifying x + 6 = -7.615773106 Reorder the terms: 6 + x = -7.615773106 Solving 6 + x = -7.615773106 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -7.615773106 + -6 Combine like terms: 6 + -6 = 0 0 + x = -7.615773106 + -6 x = -7.615773106 + -6 Combine like terms: -7.615773106 + -6 = -13.615773106 x = -13.615773106 Simplifying x = -13.615773106Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.615773106, -13.615773106}
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