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Simplifying -4y2 + -12y + 3 = 0 Reorder the terms: 3 + -12y + -4y2 = 0 Solving 3 + -12y + -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'. -0.75 + 3y + y2 = 0 Move the constant term to the right: Add '0.75' to each side of the equation. -0.75 + 3y + 0.75 + y2 = 0 + 0.75 Reorder the terms: -0.75 + 0.75 + 3y + y2 = 0 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + 3y + y2 = 0 + 0.75 3y + y2 = 0 + 0.75 Combine like terms: 0 + 0.75 = 0.75 3y + y2 = 0.75 The y term is 3y. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3y + 2.25 + y2 = 0.75 + 2.25 Reorder the terms: 2.25 + 3y + y2 = 0.75 + 2.25 Combine like terms: 0.75 + 2.25 = 3 2.25 + 3y + y2 = 3 Factor a perfect square on the left side: (y + 1.5)(y + 1.5) = 3 Calculate the square root of the right side: 1.732050808 Break this problem into two subproblems by setting (y + 1.5) equal to 1.732050808 and -1.732050808.Subproblem 1
y + 1.5 = 1.732050808 Simplifying y + 1.5 = 1.732050808 Reorder the terms: 1.5 + y = 1.732050808 Solving 1.5 + y = 1.732050808 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + y = 1.732050808 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + y = 1.732050808 + -1.5 y = 1.732050808 + -1.5 Combine like terms: 1.732050808 + -1.5 = 0.232050808 y = 0.232050808 Simplifying y = 0.232050808Subproblem 2
y + 1.5 = -1.732050808 Simplifying y + 1.5 = -1.732050808 Reorder the terms: 1.5 + y = -1.732050808 Solving 1.5 + y = -1.732050808 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + y = -1.732050808 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + y = -1.732050808 + -1.5 y = -1.732050808 + -1.5 Combine like terms: -1.732050808 + -1.5 = -3.232050808 y = -3.232050808 Simplifying y = -3.232050808Solution
The solution to the problem is based on the solutions from the subproblems. y = {0.232050808, -3.232050808}
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