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Simplifying (x + 5)(x + 5) = 12 Reorder the terms: (5 + x)(x + 5) = 12 Reorder the terms: (5 + x)(5 + x) = 12 Multiply (5 + x) * (5 + x) (5(5 + x) + x(5 + x)) = 12 ((5 * 5 + x * 5) + x(5 + x)) = 12 ((25 + 5x) + x(5 + x)) = 12 (25 + 5x + (5 * x + x * x)) = 12 (25 + 5x + (5x + x2)) = 12 Combine like terms: 5x + 5x = 10x (25 + 10x + x2) = 12 Solving 25 + 10x + x2 = 12 Solving for variable 'x'. Reorder the terms: 25 + -12 + 10x + x2 = 12 + -12 Combine like terms: 25 + -12 = 13 13 + 10x + x2 = 12 + -12 Combine like terms: 12 + -12 = 0 13 + 10x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-13' to each side of the equation. 13 + 10x + -13 + x2 = 0 + -13 Reorder the terms: 13 + -13 + 10x + x2 = 0 + -13 Combine like terms: 13 + -13 = 0 0 + 10x + x2 = 0 + -13 10x + x2 = 0 + -13 Combine like terms: 0 + -13 = -13 10x + x2 = -13 The x term is 10x. Take half its coefficient (5). Square it (25) and add it to both sides. Add '25' to each side of the equation. 10x + 25 + x2 = -13 + 25 Reorder the terms: 25 + 10x + x2 = -13 + 25 Combine like terms: -13 + 25 = 12 25 + 10x + x2 = 12 Factor a perfect square on the left side: (x + 5)(x + 5) = 12 Calculate the square root of the right side: 3.464101615 Break this problem into two subproblems by setting (x + 5) equal to 3.464101615 and -3.464101615.Subproblem 1
x + 5 = 3.464101615 Simplifying x + 5 = 3.464101615 Reorder the terms: 5 + x = 3.464101615 Solving 5 + x = 3.464101615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 3.464101615 + -5 Combine like terms: 5 + -5 = 0 0 + x = 3.464101615 + -5 x = 3.464101615 + -5 Combine like terms: 3.464101615 + -5 = -1.535898385 x = -1.535898385 Simplifying x = -1.535898385Subproblem 2
x + 5 = -3.464101615 Simplifying x + 5 = -3.464101615 Reorder the terms: 5 + x = -3.464101615 Solving 5 + x = -3.464101615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -3.464101615 + -5 Combine like terms: 5 + -5 = 0 0 + x = -3.464101615 + -5 x = -3.464101615 + -5 Combine like terms: -3.464101615 + -5 = -8.464101615 x = -8.464101615 Simplifying x = -8.464101615Solution
The solution to the problem is based on the solutions from the subproblems. x = {-1.535898385, -8.464101615}
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