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Simplifying 2x2 + 4x + 1 = 36 Reorder the terms: 1 + 4x + 2x2 = 36 Solving 1 + 4x + 2x2 = 36 Solving for variable 'x'. Reorder the terms: 1 + -36 + 4x + 2x2 = 36 + -36 Combine like terms: 1 + -36 = -35 -35 + 4x + 2x2 = 36 + -36 Combine like terms: 36 + -36 = 0 -35 + 4x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -17.5 + 2x + x2 = 0 Move the constant term to the right: Add '17.5' to each side of the equation. -17.5 + 2x + 17.5 + x2 = 0 + 17.5 Reorder the terms: -17.5 + 17.5 + 2x + x2 = 0 + 17.5 Combine like terms: -17.5 + 17.5 = 0.0 0.0 + 2x + x2 = 0 + 17.5 2x + x2 = 0 + 17.5 Combine like terms: 0 + 17.5 = 17.5 2x + x2 = 17.5 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 17.5 + 1 Reorder the terms: 1 + 2x + x2 = 17.5 + 1 Combine like terms: 17.5 + 1 = 18.5 1 + 2x + x2 = 18.5 Factor a perfect square on the left side: (x + 1)(x + 1) = 18.5 Calculate the square root of the right side: 4.301162634 Break this problem into two subproblems by setting (x + 1) equal to 4.301162634 and -4.301162634.Subproblem 1
x + 1 = 4.301162634 Simplifying x + 1 = 4.301162634 Reorder the terms: 1 + x = 4.301162634 Solving 1 + x = 4.301162634 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 4.301162634 + -1 Combine like terms: 1 + -1 = 0 0 + x = 4.301162634 + -1 x = 4.301162634 + -1 Combine like terms: 4.301162634 + -1 = 3.301162634 x = 3.301162634 Simplifying x = 3.301162634Subproblem 2
x + 1 = -4.301162634 Simplifying x + 1 = -4.301162634 Reorder the terms: 1 + x = -4.301162634 Solving 1 + x = -4.301162634 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -4.301162634 + -1 Combine like terms: 1 + -1 = 0 0 + x = -4.301162634 + -1 x = -4.301162634 + -1 Combine like terms: -4.301162634 + -1 = -5.301162634 x = -5.301162634 Simplifying x = -5.301162634Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.301162634, -5.301162634}
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