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Simplifying 4y2 + y + -13 = 0 Reorder the terms: -13 + y + 4y2 = 0 Solving -13 + y + 4y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -3.25 + 0.25y + y2 = 0 Move the constant term to the right: Add '3.25' to each side of the equation. -3.25 + 0.25y + 3.25 + y2 = 0 + 3.25 Reorder the terms: -3.25 + 3.25 + 0.25y + y2 = 0 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + 0.25y + y2 = 0 + 3.25 0.25y + y2 = 0 + 3.25 Combine like terms: 0 + 3.25 = 3.25 0.25y + y2 = 3.25 The y term is y. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.25y + 0.25 + y2 = 3.25 + 0.25 Reorder the terms: 0.25 + 0.25y + y2 = 3.25 + 0.25 Combine like terms: 3.25 + 0.25 = 3.5 0.25 + 0.25y + y2 = 3.5 Factor a perfect square on the left side: (y + 0.5)(y + 0.5) = 3.5 Calculate the square root of the right side: 1.870828693 Break this problem into two subproblems by setting (y + 0.5) equal to 1.870828693 and -1.870828693.Subproblem 1
y + 0.5 = 1.870828693 Simplifying y + 0.5 = 1.870828693 Reorder the terms: 0.5 + y = 1.870828693 Solving 0.5 + y = 1.870828693 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y = 1.870828693 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = 1.870828693 + -0.5 y = 1.870828693 + -0.5 Combine like terms: 1.870828693 + -0.5 = 1.370828693 y = 1.370828693 Simplifying y = 1.370828693Subproblem 2
y + 0.5 = -1.870828693 Simplifying y + 0.5 = -1.870828693 Reorder the terms: 0.5 + y = -1.870828693 Solving 0.5 + y = -1.870828693 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y = -1.870828693 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = -1.870828693 + -0.5 y = -1.870828693 + -0.5 Combine like terms: -1.870828693 + -0.5 = -2.370828693 y = -2.370828693 Simplifying y = -2.370828693Solution
The solution to the problem is based on the solutions from the subproblems. y = {1.370828693, -2.370828693}
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