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Simplifying 0.12y(y + -6) + 0.04y = 0.08y + -0.7 Reorder the terms: 0.12y(-6 + y) + 0.04y = 0.08y + -0.7 (-6 * 0.12y + y * 0.12y) + 0.04y = 0.08y + -0.7 (-0.72y + 0.12y2) + 0.04y = 0.08y + -0.7 Reorder the terms: -0.72y + 0.04y + 0.12y2 = 0.08y + -0.7 Combine like terms: -0.72y + 0.04y = -0.68y -0.68y + 0.12y2 = 0.08y + -0.7 Reorder the terms: -0.68y + 0.12y2 = -0.7 + 0.08y Solving -0.68y + 0.12y2 = -0.7 + 0.08y Solving for variable 'y'. Reorder the terms: 0.7 + -0.68y + -0.08y + 0.12y2 = -0.7 + 0.08y + 0.7 + -0.08y Combine like terms: -0.68y + -0.08y = -0.76y 0.7 + -0.76y + 0.12y2 = -0.7 + 0.08y + 0.7 + -0.08y Reorder the terms: 0.7 + -0.76y + 0.12y2 = -0.7 + 0.7 + 0.08y + -0.08y Combine like terms: -0.7 + 0.7 = 0.0 0.7 + -0.76y + 0.12y2 = 0.0 + 0.08y + -0.08y 0.7 + -0.76y + 0.12y2 = 0.08y + -0.08y Combine like terms: 0.08y + -0.08y = 0.00 0.7 + -0.76y + 0.12y2 = 0.00 Begin completing the square. Divide all terms by 0.12 the coefficient of the squared term: Divide each side by '0.12'. 5.833333333 + -6.333333333y + y2 = 0 Move the constant term to the right: Add '-5.833333333' to each side of the equation. 5.833333333 + -6.333333333y + -5.833333333 + y2 = 0 + -5.833333333 Reorder the terms: 5.833333333 + -5.833333333 + -6.333333333y + y2 = 0 + -5.833333333 Combine like terms: 5.833333333 + -5.833333333 = 0.000000000 0.000000000 + -6.333333333y + y2 = 0 + -5.833333333 -6.333333333y + y2 = 0 + -5.833333333 Combine like terms: 0 + -5.833333333 = -5.833333333 -6.333333333y + y2 = -5.833333333 The y term is -6.333333333y. Take half its coefficient (-3.166666667). Square it (10.02777778) and add it to both sides. Add '10.02777778' to each side of the equation. -6.333333333y + 10.02777778 + y2 = -5.833333333 + 10.02777778 Reorder the terms: 10.02777778 + -6.333333333y + y2 = -5.833333333 + 10.02777778 Combine like terms: -5.833333333 + 10.02777778 = 4.194444447 10.02777778 + -6.333333333y + y2 = 4.194444447 Factor a perfect square on the left side: (y + -3.166666667)(y + -3.166666667) = 4.194444447 Calculate the square root of the right side: 2.048034289 Break this problem into two subproblems by setting (y + -3.166666667) equal to 2.048034289 and -2.048034289.Subproblem 1
y + -3.166666667 = 2.048034289 Simplifying y + -3.166666667 = 2.048034289 Reorder the terms: -3.166666667 + y = 2.048034289 Solving -3.166666667 + y = 2.048034289 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3.166666667' to each side of the equation. -3.166666667 + 3.166666667 + y = 2.048034289 + 3.166666667 Combine like terms: -3.166666667 + 3.166666667 = 0.000000000 0.000000000 + y = 2.048034289 + 3.166666667 y = 2.048034289 + 3.166666667 Combine like terms: 2.048034289 + 3.166666667 = 5.214700956 y = 5.214700956 Simplifying y = 5.214700956Subproblem 2
y + -3.166666667 = -2.048034289 Simplifying y + -3.166666667 = -2.048034289 Reorder the terms: -3.166666667 + y = -2.048034289 Solving -3.166666667 + y = -2.048034289 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3.166666667' to each side of the equation. -3.166666667 + 3.166666667 + y = -2.048034289 + 3.166666667 Combine like terms: -3.166666667 + 3.166666667 = 0.000000000 0.000000000 + y = -2.048034289 + 3.166666667 y = -2.048034289 + 3.166666667 Combine like terms: -2.048034289 + 3.166666667 = 1.118632378 y = 1.118632378 Simplifying y = 1.118632378Solution
The solution to the problem is based on the solutions from the subproblems. y = {5.214700956, 1.118632378}
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