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Simplifying 2y2 + 4y = 1 Reorder the terms: 4y + 2y2 = 1 Solving 4y + 2y2 = 1 Solving for variable 'y'. Reorder the terms: -1 + 4y + 2y2 = 1 + -1 Combine like terms: 1 + -1 = 0 -1 + 4y + 2y2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -0.5 + 2y + y2 = 0 Move the constant term to the right: Add '0.5' to each side of the equation. -0.5 + 2y + 0.5 + y2 = 0 + 0.5 Reorder the terms: -0.5 + 0.5 + 2y + y2 = 0 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + 2y + y2 = 0 + 0.5 2y + y2 = 0 + 0.5 Combine like terms: 0 + 0.5 = 0.5 2y + y2 = 0.5 The y term is 2y. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2y + 1 + y2 = 0.5 + 1 Reorder the terms: 1 + 2y + y2 = 0.5 + 1 Combine like terms: 0.5 + 1 = 1.5 1 + 2y + y2 = 1.5 Factor a perfect square on the left side: (y + 1)(y + 1) = 1.5 Calculate the square root of the right side: 1.224744871 Break this problem into two subproblems by setting (y + 1) equal to 1.224744871 and -1.224744871.Subproblem 1
y + 1 = 1.224744871 Simplifying y + 1 = 1.224744871 Reorder the terms: 1 + y = 1.224744871 Solving 1 + y = 1.224744871 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + y = 1.224744871 + -1 Combine like terms: 1 + -1 = 0 0 + y = 1.224744871 + -1 y = 1.224744871 + -1 Combine like terms: 1.224744871 + -1 = 0.224744871 y = 0.224744871 Simplifying y = 0.224744871Subproblem 2
y + 1 = -1.224744871 Simplifying y + 1 = -1.224744871 Reorder the terms: 1 + y = -1.224744871 Solving 1 + y = -1.224744871 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + y = -1.224744871 + -1 Combine like terms: 1 + -1 = 0 0 + y = -1.224744871 + -1 y = -1.224744871 + -1 Combine like terms: -1.224744871 + -1 = -2.224744871 y = -2.224744871 Simplifying y = -2.224744871Solution
The solution to the problem is based on the solutions from the subproblems. y = {0.224744871, -2.224744871}
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