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Simplifying 3y2 + -23y + 16 = 0 Reorder the terms: 16 + -23y + 3y2 = 0 Solving 16 + -23y + 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'. 5.333333333 + -7.666666667y + y2 = 0 Move the constant term to the right: Add '-5.333333333' to each side of the equation. 5.333333333 + -7.666666667y + -5.333333333 + y2 = 0 + -5.333333333 Reorder the terms: 5.333333333 + -5.333333333 + -7.666666667y + y2 = 0 + -5.333333333 Combine like terms: 5.333333333 + -5.333333333 = 0.000000000 0.000000000 + -7.666666667y + y2 = 0 + -5.333333333 -7.666666667y + y2 = 0 + -5.333333333 Combine like terms: 0 + -5.333333333 = -5.333333333 -7.666666667y + y2 = -5.333333333 The y term is -7.666666667y. Take half its coefficient (-3.833333334). Square it (14.69444445) and add it to both sides. Add '14.69444445' to each side of the equation. -7.666666667y + 14.69444445 + y2 = -5.333333333 + 14.69444445 Reorder the terms: 14.69444445 + -7.666666667y + y2 = -5.333333333 + 14.69444445 Combine like terms: -5.333333333 + 14.69444445 = 9.361111117 14.69444445 + -7.666666667y + y2 = 9.361111117 Factor a perfect square on the left side: (y + -3.833333334)(y + -3.833333334) = 9.361111117 Calculate the square root of the right side: 3.059593293 Break this problem into two subproblems by setting (y + -3.833333334) equal to 3.059593293 and -3.059593293.Subproblem 1
y + -3.833333334 = 3.059593293 Simplifying y + -3.833333334 = 3.059593293 Reorder the terms: -3.833333334 + y = 3.059593293 Solving -3.833333334 + y = 3.059593293 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3.833333334' to each side of the equation. -3.833333334 + 3.833333334 + y = 3.059593293 + 3.833333334 Combine like terms: -3.833333334 + 3.833333334 = 0.000000000 0.000000000 + y = 3.059593293 + 3.833333334 y = 3.059593293 + 3.833333334 Combine like terms: 3.059593293 + 3.833333334 = 6.892926627 y = 6.892926627 Simplifying y = 6.892926627Subproblem 2
y + -3.833333334 = -3.059593293 Simplifying y + -3.833333334 = -3.059593293 Reorder the terms: -3.833333334 + y = -3.059593293 Solving -3.833333334 + y = -3.059593293 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3.833333334' to each side of the equation. -3.833333334 + 3.833333334 + y = -3.059593293 + 3.833333334 Combine like terms: -3.833333334 + 3.833333334 = 0.000000000 0.000000000 + y = -3.059593293 + 3.833333334 y = -3.059593293 + 3.833333334 Combine like terms: -3.059593293 + 3.833333334 = 0.773740041 y = 0.773740041 Simplifying y = 0.773740041Solution
The solution to the problem is based on the solutions from the subproblems. y = {6.892926627, 0.773740041}
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