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Simplifying 0 = x2 + -20x + 60 Reorder the terms: 0 = 60 + -20x + x2 Solving 0 = 60 + -20x + x2 Solving for variable 'x'. Combine like terms: 0 + -60 = -60 -60 + 20x + -1x2 = 60 + -20x + x2 + -60 + 20x + -1x2 Reorder the terms: -60 + 20x + -1x2 = 60 + -60 + -20x + 20x + x2 + -1x2 Combine like terms: 60 + -60 = 0 -60 + 20x + -1x2 = 0 + -20x + 20x + x2 + -1x2 -60 + 20x + -1x2 = -20x + 20x + x2 + -1x2 Combine like terms: -20x + 20x = 0 -60 + 20x + -1x2 = 0 + x2 + -1x2 -60 + 20x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -60 + 20x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 60 + -20x + x2 = 0 Move the constant term to the right: Add '-60' to each side of the equation. 60 + -20x + -60 + x2 = 0 + -60 Reorder the terms: 60 + -60 + -20x + x2 = 0 + -60 Combine like terms: 60 + -60 = 0 0 + -20x + x2 = 0 + -60 -20x + x2 = 0 + -60 Combine like terms: 0 + -60 = -60 -20x + x2 = -60 The x term is -20x. Take half its coefficient (-10). Square it (100) and add it to both sides. Add '100' to each side of the equation. -20x + 100 + x2 = -60 + 100 Reorder the terms: 100 + -20x + x2 = -60 + 100 Combine like terms: -60 + 100 = 40 100 + -20x + x2 = 40 Factor a perfect square on the left side: (x + -10)(x + -10) = 40 Calculate the square root of the right side: 6.32455532 Break this problem into two subproblems by setting (x + -10) equal to 6.32455532 and -6.32455532.Subproblem 1
x + -10 = 6.32455532 Simplifying x + -10 = 6.32455532 Reorder the terms: -10 + x = 6.32455532 Solving -10 + x = 6.32455532 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = 6.32455532 + 10 Combine like terms: -10 + 10 = 0 0 + x = 6.32455532 + 10 x = 6.32455532 + 10 Combine like terms: 6.32455532 + 10 = 16.32455532 x = 16.32455532 Simplifying x = 16.32455532Subproblem 2
x + -10 = -6.32455532 Simplifying x + -10 = -6.32455532 Reorder the terms: -10 + x = -6.32455532 Solving -10 + x = -6.32455532 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = -6.32455532 + 10 Combine like terms: -10 + 10 = 0 0 + x = -6.32455532 + 10 x = -6.32455532 + 10 Combine like terms: -6.32455532 + 10 = 3.67544468 x = 3.67544468 Simplifying x = 3.67544468Solution
The solution to the problem is based on the solutions from the subproblems. x = {16.32455532, 3.67544468}
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