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Simplifying -3y2 + -6y + 5 = 0 Reorder the terms: 5 + -6y + -3y2 = 0 Solving 5 + -6y + -3y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by -3 the coefficient of the squared term: Divide each side by '-3'. -1.666666667 + 2y + y2 = 0 Move the constant term to the right: Add '1.666666667' to each side of the equation. -1.666666667 + 2y + 1.666666667 + y2 = 0 + 1.666666667 Reorder the terms: -1.666666667 + 1.666666667 + 2y + y2 = 0 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + 2y + y2 = 0 + 1.666666667 2y + y2 = 0 + 1.666666667 Combine like terms: 0 + 1.666666667 = 1.666666667 2y + y2 = 1.666666667 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 = 1.666666667 + 1 Reorder the terms: 1 + 2y + y2 = 1.666666667 + 1 Combine like terms: 1.666666667 + 1 = 2.666666667 1 + 2y + y2 = 2.666666667 Factor a perfect square on the left side: (y + 1)(y + 1) = 2.666666667 Calculate the square root of the right side: 1.632993162 Break this problem into two subproblems by setting (y + 1) equal to 1.632993162 and -1.632993162.Subproblem 1
y + 1 = 1.632993162 Simplifying y + 1 = 1.632993162 Reorder the terms: 1 + y = 1.632993162 Solving 1 + y = 1.632993162 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 = 1.632993162 + -1 Combine like terms: 1 + -1 = 0 0 + y = 1.632993162 + -1 y = 1.632993162 + -1 Combine like terms: 1.632993162 + -1 = 0.632993162 y = 0.632993162 Simplifying y = 0.632993162Subproblem 2
y + 1 = -1.632993162 Simplifying y + 1 = -1.632993162 Reorder the terms: 1 + y = -1.632993162 Solving 1 + y = -1.632993162 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 = -1.632993162 + -1 Combine like terms: 1 + -1 = 0 0 + y = -1.632993162 + -1 y = -1.632993162 + -1 Combine like terms: -1.632993162 + -1 = -2.632993162 y = -2.632993162 Simplifying y = -2.632993162Solution
The solution to the problem is based on the solutions from the subproblems. y = {0.632993162, -2.632993162}
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