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Simplifying 6y2 + -7y + -12 = 0 Reorder the terms: -12 + -7y + 6y2 = 0 Solving -12 + -7y + 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'. -2 + -1.166666667y + y2 = 0 Move the constant term to the right: Add '2' to each side of the equation. -2 + -1.166666667y + 2 + y2 = 0 + 2 Reorder the terms: -2 + 2 + -1.166666667y + y2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1.166666667y + y2 = 0 + 2 -1.166666667y + y2 = 0 + 2 Combine like terms: 0 + 2 = 2 -1.166666667y + y2 = 2 The y term is -1.166666667y. Take half its coefficient (-0.5833333335). Square it (0.3402777780) and add it to both sides. Add '0.3402777780' to each side of the equation. -1.166666667y + 0.3402777780 + y2 = 2 + 0.3402777780 Reorder the terms: 0.3402777780 + -1.166666667y + y2 = 2 + 0.3402777780 Combine like terms: 2 + 0.3402777780 = 2.340277778 0.3402777780 + -1.166666667y + y2 = 2.340277778 Factor a perfect square on the left side: (y + -0.5833333335)(y + -0.5833333335) = 2.340277778 Calculate the square root of the right side: 1.529796646 Break this problem into two subproblems by setting (y + -0.5833333335) equal to 1.529796646 and -1.529796646.Subproblem 1
y + -0.5833333335 = 1.529796646 Simplifying y + -0.5833333335 = 1.529796646 Reorder the terms: -0.5833333335 + y = 1.529796646 Solving -0.5833333335 + y = 1.529796646 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.5833333335' to each side of the equation. -0.5833333335 + 0.5833333335 + y = 1.529796646 + 0.5833333335 Combine like terms: -0.5833333335 + 0.5833333335 = 0.0000000000 0.0000000000 + y = 1.529796646 + 0.5833333335 y = 1.529796646 + 0.5833333335 Combine like terms: 1.529796646 + 0.5833333335 = 2.1131299795 y = 2.1131299795 Simplifying y = 2.1131299795Subproblem 2
y + -0.5833333335 = -1.529796646 Simplifying y + -0.5833333335 = -1.529796646 Reorder the terms: -0.5833333335 + y = -1.529796646 Solving -0.5833333335 + y = -1.529796646 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.5833333335' to each side of the equation. -0.5833333335 + 0.5833333335 + y = -1.529796646 + 0.5833333335 Combine like terms: -0.5833333335 + 0.5833333335 = 0.0000000000 0.0000000000 + y = -1.529796646 + 0.5833333335 y = -1.529796646 + 0.5833333335 Combine like terms: -1.529796646 + 0.5833333335 = -0.9464633125 y = -0.9464633125 Simplifying y = -0.9464633125Solution
The solution to the problem is based on the solutions from the subproblems. y = {2.1131299795, -0.9464633125}
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