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Simplifying 6y2 + -11y + -42 = 0 Reorder the terms: -42 + -11y + 6y2 = 0 Solving -42 + -11y + 6y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by 6 the coefficient of the squared term: Divide each side by '6'. -7 + -1.833333333y + y2 = 0 Move the constant term to the right: Add '7' to each side of the equation. -7 + -1.833333333y + 7 + y2 = 0 + 7 Reorder the terms: -7 + 7 + -1.833333333y + y2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1.833333333y + y2 = 0 + 7 -1.833333333y + y2 = 0 + 7 Combine like terms: 0 + 7 = 7 -1.833333333y + y2 = 7 The y term is -1.833333333y. Take half its coefficient (-0.9166666665). Square it (0.8402777775) and add it to both sides. Add '0.8402777775' to each side of the equation. -1.833333333y + 0.8402777775 + y2 = 7 + 0.8402777775 Reorder the terms: 0.8402777775 + -1.833333333y + y2 = 7 + 0.8402777775 Combine like terms: 7 + 0.8402777775 = 7.8402777775 0.8402777775 + -1.833333333y + y2 = 7.8402777775 Factor a perfect square on the left side: (y + -0.9166666665)(y + -0.9166666665) = 7.8402777775 Calculate the square root of the right side: 2.800049603 Break this problem into two subproblems by setting (y + -0.9166666665) equal to 2.800049603 and -2.800049603.Subproblem 1
y + -0.9166666665 = 2.800049603 Simplifying y + -0.9166666665 = 2.800049603 Reorder the terms: -0.9166666665 + y = 2.800049603 Solving -0.9166666665 + y = 2.800049603 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.9166666665' to each side of the equation. -0.9166666665 + 0.9166666665 + y = 2.800049603 + 0.9166666665 Combine like terms: -0.9166666665 + 0.9166666665 = 0.0000000000 0.0000000000 + y = 2.800049603 + 0.9166666665 y = 2.800049603 + 0.9166666665 Combine like terms: 2.800049603 + 0.9166666665 = 3.7167162695 y = 3.7167162695 Simplifying y = 3.7167162695Subproblem 2
y + -0.9166666665 = -2.800049603 Simplifying y + -0.9166666665 = -2.800049603 Reorder the terms: -0.9166666665 + y = -2.800049603 Solving -0.9166666665 + y = -2.800049603 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.9166666665' to each side of the equation. -0.9166666665 + 0.9166666665 + y = -2.800049603 + 0.9166666665 Combine like terms: -0.9166666665 + 0.9166666665 = 0.0000000000 0.0000000000 + y = -2.800049603 + 0.9166666665 y = -2.800049603 + 0.9166666665 Combine like terms: -2.800049603 + 0.9166666665 = -1.8833829365 y = -1.8833829365 Simplifying y = -1.8833829365Solution
The solution to the problem is based on the solutions from the subproblems. y = {3.7167162695, -1.8833829365}
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