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Simplifying 4y2 + 12y + 13 = 2y2 + 4 Reorder the terms: 13 + 12y + 4y2 = 2y2 + 4 Reorder the terms: 13 + 12y + 4y2 = 4 + 2y2 Solving 13 + 12y + 4y2 = 4 + 2y2 Solving for variable 'y'. Reorder the terms: 13 + -4 + 12y + 4y2 + -2y2 = 4 + 2y2 + -4 + -2y2 Combine like terms: 13 + -4 = 9 9 + 12y + 4y2 + -2y2 = 4 + 2y2 + -4 + -2y2 Combine like terms: 4y2 + -2y2 = 2y2 9 + 12y + 2y2 = 4 + 2y2 + -4 + -2y2 Reorder the terms: 9 + 12y + 2y2 = 4 + -4 + 2y2 + -2y2 Combine like terms: 4 + -4 = 0 9 + 12y + 2y2 = 0 + 2y2 + -2y2 9 + 12y + 2y2 = 2y2 + -2y2 Combine like terms: 2y2 + -2y2 = 0 9 + 12y + 2y2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 4.5 + 6y + y2 = 0 Move the constant term to the right: Add '-4.5' to each side of the equation. 4.5 + 6y + -4.5 + y2 = 0 + -4.5 Reorder the terms: 4.5 + -4.5 + 6y + y2 = 0 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + 6y + y2 = 0 + -4.5 6y + y2 = 0 + -4.5 Combine like terms: 0 + -4.5 = -4.5 6y + y2 = -4.5 The y term is 6y. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6y + 9 + y2 = -4.5 + 9 Reorder the terms: 9 + 6y + y2 = -4.5 + 9 Combine like terms: -4.5 + 9 = 4.5 9 + 6y + y2 = 4.5 Factor a perfect square on the left side: (y + 3)(y + 3) = 4.5 Calculate the square root of the right side: 2.121320344 Break this problem into two subproblems by setting (y + 3) equal to 2.121320344 and -2.121320344.Subproblem 1
y + 3 = 2.121320344 Simplifying y + 3 = 2.121320344 Reorder the terms: 3 + y = 2.121320344 Solving 3 + y = 2.121320344 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + y = 2.121320344 + -3 Combine like terms: 3 + -3 = 0 0 + y = 2.121320344 + -3 y = 2.121320344 + -3 Combine like terms: 2.121320344 + -3 = -0.878679656 y = -0.878679656 Simplifying y = -0.878679656Subproblem 2
y + 3 = -2.121320344 Simplifying y + 3 = -2.121320344 Reorder the terms: 3 + y = -2.121320344 Solving 3 + y = -2.121320344 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + y = -2.121320344 + -3 Combine like terms: 3 + -3 = 0 0 + y = -2.121320344 + -3 y = -2.121320344 + -3 Combine like terms: -2.121320344 + -3 = -5.121320344 y = -5.121320344 Simplifying y = -5.121320344Solution
The solution to the problem is based on the solutions from the subproblems. y = {-0.878679656, -5.121320344}
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