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Simplifying -3y2 + 12y + -5 = 0 Reorder the terms: -5 + 12y + -3y2 = 0 Solving -5 + 12y + -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 + -4y + y2 = 0 Move the constant term to the right: Add '-1.666666667' to each side of the equation. 1.666666667 + -4y + -1.666666667 + y2 = 0 + -1.666666667 Reorder the terms: 1.666666667 + -1.666666667 + -4y + y2 = 0 + -1.666666667 Combine like terms: 1.666666667 + -1.666666667 = 0.000000000 0.000000000 + -4y + y2 = 0 + -1.666666667 -4y + y2 = 0 + -1.666666667 Combine like terms: 0 + -1.666666667 = -1.666666667 -4y + y2 = -1.666666667 The y term is -4y. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4y + 4 + y2 = -1.666666667 + 4 Reorder the terms: 4 + -4y + y2 = -1.666666667 + 4 Combine like terms: -1.666666667 + 4 = 2.333333333 4 + -4y + y2 = 2.333333333 Factor a perfect square on the left side: (y + -2)(y + -2) = 2.333333333 Calculate the square root of the right side: 1.527525232 Break this problem into two subproblems by setting (y + -2) equal to 1.527525232 and -1.527525232.Subproblem 1
y + -2 = 1.527525232 Simplifying y + -2 = 1.527525232 Reorder the terms: -2 + y = 1.527525232 Solving -2 + y = 1.527525232 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + y = 1.527525232 + 2 Combine like terms: -2 + 2 = 0 0 + y = 1.527525232 + 2 y = 1.527525232 + 2 Combine like terms: 1.527525232 + 2 = 3.527525232 y = 3.527525232 Simplifying y = 3.527525232Subproblem 2
y + -2 = -1.527525232 Simplifying y + -2 = -1.527525232 Reorder the terms: -2 + y = -1.527525232 Solving -2 + y = -1.527525232 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + y = -1.527525232 + 2 Combine like terms: -2 + 2 = 0 0 + y = -1.527525232 + 2 y = -1.527525232 + 2 Combine like terms: -1.527525232 + 2 = 0.472474768 y = 0.472474768 Simplifying y = 0.472474768Solution
The solution to the problem is based on the solutions from the subproblems. y = {3.527525232, 0.472474768}
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