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Simplifying (y)(y) + 3y + -36 = 0 Multiply y * y y2 + 3y + -36 = 0 Reorder the terms: -36 + 3y + y2 = 0 Solving -36 + 3y + y2 = 0 Solving for variable 'y'. Begin completing the square. Move the constant term to the right: Add '36' to each side of the equation. -36 + 3y + 36 + y2 = 0 + 36 Reorder the terms: -36 + 36 + 3y + y2 = 0 + 36 Combine like terms: -36 + 36 = 0 0 + 3y + y2 = 0 + 36 3y + y2 = 0 + 36 Combine like terms: 0 + 36 = 36 3y + y2 = 36 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 = 36 + 2.25 Reorder the terms: 2.25 + 3y + y2 = 36 + 2.25 Combine like terms: 36 + 2.25 = 38.25 2.25 + 3y + y2 = 38.25 Factor a perfect square on the left side: (y + 1.5)(y + 1.5) = 38.25 Calculate the square root of the right side: 6.184658438 Break this problem into two subproblems by setting (y + 1.5) equal to 6.184658438 and -6.184658438.Subproblem 1
y + 1.5 = 6.184658438 Simplifying y + 1.5 = 6.184658438 Reorder the terms: 1.5 + y = 6.184658438 Solving 1.5 + y = 6.184658438 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 = 6.184658438 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + y = 6.184658438 + -1.5 y = 6.184658438 + -1.5 Combine like terms: 6.184658438 + -1.5 = 4.684658438 y = 4.684658438 Simplifying y = 4.684658438Subproblem 2
y + 1.5 = -6.184658438 Simplifying y + 1.5 = -6.184658438 Reorder the terms: 1.5 + y = -6.184658438 Solving 1.5 + y = -6.184658438 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 = -6.184658438 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + y = -6.184658438 + -1.5 y = -6.184658438 + -1.5 Combine like terms: -6.184658438 + -1.5 = -7.684658438 y = -7.684658438 Simplifying y = -7.684658438Solution
The solution to the problem is based on the solutions from the subproblems. y = {4.684658438, -7.684658438}
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