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Simplifying (y + 1) = 2y2 + 4y + -14 Reorder the terms: (1 + y) = 2y2 + 4y + -14 Remove parenthesis around (1 + y) 1 + y = 2y2 + 4y + -14 Reorder the terms: 1 + y = -14 + 4y + 2y2 Solving 1 + y = -14 + 4y + 2y2 Solving for variable 'y'. Reorder the terms: 1 + 14 + y + -4y + -2y2 = -14 + 4y + 2y2 + 14 + -4y + -2y2 Combine like terms: 1 + 14 = 15 15 + y + -4y + -2y2 = -14 + 4y + 2y2 + 14 + -4y + -2y2 Combine like terms: y + -4y = -3y 15 + -3y + -2y2 = -14 + 4y + 2y2 + 14 + -4y + -2y2 Reorder the terms: 15 + -3y + -2y2 = -14 + 14 + 4y + -4y + 2y2 + -2y2 Combine like terms: -14 + 14 = 0 15 + -3y + -2y2 = 0 + 4y + -4y + 2y2 + -2y2 15 + -3y + -2y2 = 4y + -4y + 2y2 + -2y2 Combine like terms: 4y + -4y = 0 15 + -3y + -2y2 = 0 + 2y2 + -2y2 15 + -3y + -2y2 = 2y2 + -2y2 Combine like terms: 2y2 + -2y2 = 0 15 + -3y + -2y2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -7.5 + 1.5y + y2 = 0 Move the constant term to the right: Add '7.5' to each side of the equation. -7.5 + 1.5y + 7.5 + y2 = 0 + 7.5 Reorder the terms: -7.5 + 7.5 + 1.5y + y2 = 0 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + 1.5y + y2 = 0 + 7.5 1.5y + y2 = 0 + 7.5 Combine like terms: 0 + 7.5 = 7.5 1.5y + y2 = 7.5 The y term is 1.5y. Take half its coefficient (0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. 1.5y + 0.5625 + y2 = 7.5 + 0.5625 Reorder the terms: 0.5625 + 1.5y + y2 = 7.5 + 0.5625 Combine like terms: 7.5 + 0.5625 = 8.0625 0.5625 + 1.5y + y2 = 8.0625 Factor a perfect square on the left side: (y + 0.75)(y + 0.75) = 8.0625 Calculate the square root of the right side: 2.839454173 Break this problem into two subproblems by setting (y + 0.75) equal to 2.839454173 and -2.839454173.Subproblem 1
y + 0.75 = 2.839454173 Simplifying y + 0.75 = 2.839454173 Reorder the terms: 0.75 + y = 2.839454173 Solving 0.75 + y = 2.839454173 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + y = 2.839454173 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + y = 2.839454173 + -0.75 y = 2.839454173 + -0.75 Combine like terms: 2.839454173 + -0.75 = 2.089454173 y = 2.089454173 Simplifying y = 2.089454173Subproblem 2
y + 0.75 = -2.839454173 Simplifying y + 0.75 = -2.839454173 Reorder the terms: 0.75 + y = -2.839454173 Solving 0.75 + y = -2.839454173 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + y = -2.839454173 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + y = -2.839454173 + -0.75 y = -2.839454173 + -0.75 Combine like terms: -2.839454173 + -0.75 = -3.589454173 y = -3.589454173 Simplifying y = -3.589454173Solution
The solution to the problem is based on the solutions from the subproblems. y = {2.089454173, -3.589454173}
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