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Simplifying (x + 58)(x + 21) = 180 Reorder the terms: (58 + x)(x + 21) = 180 Reorder the terms: (58 + x)(21 + x) = 180 Multiply (58 + x) * (21 + x) (58(21 + x) + x(21 + x)) = 180 ((21 * 58 + x * 58) + x(21 + x)) = 180 ((1218 + 58x) + x(21 + x)) = 180 (1218 + 58x + (21 * x + x * x)) = 180 (1218 + 58x + (21x + x2)) = 180 Combine like terms: 58x + 21x = 79x (1218 + 79x + x2) = 180 Solving 1218 + 79x + x2 = 180 Solving for variable 'x'. Reorder the terms: 1218 + -180 + 79x + x2 = 180 + -180 Combine like terms: 1218 + -180 = 1038 1038 + 79x + x2 = 180 + -180 Combine like terms: 180 + -180 = 0 1038 + 79x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-1038' to each side of the equation. 1038 + 79x + -1038 + x2 = 0 + -1038 Reorder the terms: 1038 + -1038 + 79x + x2 = 0 + -1038 Combine like terms: 1038 + -1038 = 0 0 + 79x + x2 = 0 + -1038 79x + x2 = 0 + -1038 Combine like terms: 0 + -1038 = -1038 79x + x2 = -1038 The x term is 79x. Take half its coefficient (39.5). Square it (1560.25) and add it to both sides. Add '1560.25' to each side of the equation. 79x + 1560.25 + x2 = -1038 + 1560.25 Reorder the terms: 1560.25 + 79x + x2 = -1038 + 1560.25 Combine like terms: -1038 + 1560.25 = 522.25 1560.25 + 79x + x2 = 522.25 Factor a perfect square on the left side: (x + 39.5)(x + 39.5) = 522.25 Calculate the square root of the right side: 22.852789764 Break this problem into two subproblems by setting (x + 39.5) equal to 22.852789764 and -22.852789764.Subproblem 1
x + 39.5 = 22.852789764 Simplifying x + 39.5 = 22.852789764 Reorder the terms: 39.5 + x = 22.852789764 Solving 39.5 + x = 22.852789764 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-39.5' to each side of the equation. 39.5 + -39.5 + x = 22.852789764 + -39.5 Combine like terms: 39.5 + -39.5 = 0.0 0.0 + x = 22.852789764 + -39.5 x = 22.852789764 + -39.5 Combine like terms: 22.852789764 + -39.5 = -16.647210236 x = -16.647210236 Simplifying x = -16.647210236Subproblem 2
x + 39.5 = -22.852789764 Simplifying x + 39.5 = -22.852789764 Reorder the terms: 39.5 + x = -22.852789764 Solving 39.5 + x = -22.852789764 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-39.5' to each side of the equation. 39.5 + -39.5 + x = -22.852789764 + -39.5 Combine like terms: 39.5 + -39.5 = 0.0 0.0 + x = -22.852789764 + -39.5 x = -22.852789764 + -39.5 Combine like terms: -22.852789764 + -39.5 = -62.352789764 x = -62.352789764 Simplifying x = -62.352789764Solution
The solution to the problem is based on the solutions from the subproblems. x = {-16.647210236, -62.352789764}
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