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Simplifying 0 = y2 + -3y + -13 Reorder the terms: 0 = -13 + -3y + y2 Solving 0 = -13 + -3y + y2 Solving for variable 'y'. Combine like terms: 0 + 13 = 13 13 + 3y + -1y2 = -13 + -3y + y2 + 13 + 3y + -1y2 Reorder the terms: 13 + 3y + -1y2 = -13 + 13 + -3y + 3y + y2 + -1y2 Combine like terms: -13 + 13 = 0 13 + 3y + -1y2 = 0 + -3y + 3y + y2 + -1y2 13 + 3y + -1y2 = -3y + 3y + y2 + -1y2 Combine like terms: -3y + 3y = 0 13 + 3y + -1y2 = 0 + y2 + -1y2 13 + 3y + -1y2 = y2 + -1y2 Combine like terms: y2 + -1y2 = 0 13 + 3y + -1y2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -13 + -3y + y2 = 0 Move the constant term to the right: Add '13' to each side of the equation. -13 + -3y + 13 + y2 = 0 + 13 Reorder the terms: -13 + 13 + -3y + y2 = 0 + 13 Combine like terms: -13 + 13 = 0 0 + -3y + y2 = 0 + 13 -3y + y2 = 0 + 13 Combine like terms: 0 + 13 = 13 -3y + y2 = 13 The y term is -3y. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3y + 2.25 + y2 = 13 + 2.25 Reorder the terms: 2.25 + -3y + y2 = 13 + 2.25 Combine like terms: 13 + 2.25 = 15.25 2.25 + -3y + y2 = 15.25 Factor a perfect square on the left side: (y + -1.5)(y + -1.5) = 15.25 Calculate the square root of the right side: 3.905124838 Break this problem into two subproblems by setting (y + -1.5) equal to 3.905124838 and -3.905124838.Subproblem 1
y + -1.5 = 3.905124838 Simplifying y + -1.5 = 3.905124838 Reorder the terms: -1.5 + y = 3.905124838 Solving -1.5 + y = 3.905124838 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + y = 3.905124838 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + y = 3.905124838 + 1.5 y = 3.905124838 + 1.5 Combine like terms: 3.905124838 + 1.5 = 5.405124838 y = 5.405124838 Simplifying y = 5.405124838Subproblem 2
y + -1.5 = -3.905124838 Simplifying y + -1.5 = -3.905124838 Reorder the terms: -1.5 + y = -3.905124838 Solving -1.5 + y = -3.905124838 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + y = -3.905124838 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + y = -3.905124838 + 1.5 y = -3.905124838 + 1.5 Combine like terms: -3.905124838 + 1.5 = -2.405124838 y = -2.405124838 Simplifying y = -2.405124838Solution
The solution to the problem is based on the solutions from the subproblems. y = {5.405124838, -2.405124838}
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