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Simplifying 220.5 = 4x + x2 Solving 220.5 = 4x + x2 Solving for variable 'x'. Reorder the terms: 220.5 + -4x + -1x2 = 4x + -4x + x2 + -1x2 Combine like terms: 4x + -4x = 0 220.5 + -4x + -1x2 = 0 + x2 + -1x2 220.5 + -4x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 220.5 + -4x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -220.5 + 4x + x2 = 0 Move the constant term to the right: Add '220.5' to each side of the equation. -220.5 + 4x + 220.5 + x2 = 0 + 220.5 Reorder the terms: -220.5 + 220.5 + 4x + x2 = 0 + 220.5 Combine like terms: -220.5 + 220.5 = 0.0 0.0 + 4x + x2 = 0 + 220.5 4x + x2 = 0 + 220.5 Combine like terms: 0 + 220.5 = 220.5 4x + x2 = 220.5 The x term is 4x. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x + 4 + x2 = 220.5 + 4 Reorder the terms: 4 + 4x + x2 = 220.5 + 4 Combine like terms: 220.5 + 4 = 224.5 4 + 4x + x2 = 224.5 Factor a perfect square on the left side: (x + 2)(x + 2) = 224.5 Calculate the square root of the right side: 14.983324064 Break this problem into two subproblems by setting (x + 2) equal to 14.983324064 and -14.983324064.Subproblem 1
x + 2 = 14.983324064 Simplifying x + 2 = 14.983324064 Reorder the terms: 2 + x = 14.983324064 Solving 2 + x = 14.983324064 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 14.983324064 + -2 Combine like terms: 2 + -2 = 0 0 + x = 14.983324064 + -2 x = 14.983324064 + -2 Combine like terms: 14.983324064 + -2 = 12.983324064 x = 12.983324064 Simplifying x = 12.983324064Subproblem 2
x + 2 = -14.983324064 Simplifying x + 2 = -14.983324064 Reorder the terms: 2 + x = -14.983324064 Solving 2 + x = -14.983324064 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -14.983324064 + -2 Combine like terms: 2 + -2 = 0 0 + x = -14.983324064 + -2 x = -14.983324064 + -2 Combine like terms: -14.983324064 + -2 = -16.983324064 x = -16.983324064 Simplifying x = -16.983324064Solution
The solution to the problem is based on the solutions from the subproblems. x = {12.983324064, -16.983324064}
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