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Simplifying 2y2 + -4y = 3 Reorder the terms: -4y + 2y2 = 3 Solving -4y + 2y2 = 3 Solving for variable 'y'. Reorder the terms: -3 + -4y + 2y2 = 3 + -3 Combine like terms: 3 + -3 = 0 -3 + -4y + 2y2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -1.5 + -2y + y2 = 0 Move the constant term to the right: Add '1.5' to each side of the equation. -1.5 + -2y + 1.5 + y2 = 0 + 1.5 Reorder the terms: -1.5 + 1.5 + -2y + y2 = 0 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + -2y + y2 = 0 + 1.5 -2y + y2 = 0 + 1.5 Combine like terms: 0 + 1.5 = 1.5 -2y + y2 = 1.5 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 = 1.5 + 1 Reorder the terms: 1 + -2y + y2 = 1.5 + 1 Combine like terms: 1.5 + 1 = 2.5 1 + -2y + y2 = 2.5 Factor a perfect square on the left side: (y + -1)(y + -1) = 2.5 Calculate the square root of the right side: 1.58113883 Break this problem into two subproblems by setting (y + -1) equal to 1.58113883 and -1.58113883.Subproblem 1
y + -1 = 1.58113883 Simplifying y + -1 = 1.58113883 Reorder the terms: -1 + y = 1.58113883 Solving -1 + y = 1.58113883 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 = 1.58113883 + 1 Combine like terms: -1 + 1 = 0 0 + y = 1.58113883 + 1 y = 1.58113883 + 1 Combine like terms: 1.58113883 + 1 = 2.58113883 y = 2.58113883 Simplifying y = 2.58113883Subproblem 2
y + -1 = -1.58113883 Simplifying y + -1 = -1.58113883 Reorder the terms: -1 + y = -1.58113883 Solving -1 + y = -1.58113883 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 = -1.58113883 + 1 Combine like terms: -1 + 1 = 0 0 + y = -1.58113883 + 1 y = -1.58113883 + 1 Combine like terms: -1.58113883 + 1 = -0.58113883 y = -0.58113883 Simplifying y = -0.58113883Solution
The solution to the problem is based on the solutions from the subproblems. y = {2.58113883, -0.58113883}
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