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Simplifying -4y2 + 24y + -15 = 0 Reorder the terms: -15 + 24y + -4y2 = 0 Solving -15 + 24y + -4y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by -4 the coefficient of the squared term: Divide each side by '-4'. 3.75 + -6y + y2 = 0 Move the constant term to the right: Add '-3.75' to each side of the equation. 3.75 + -6y + -3.75 + y2 = 0 + -3.75 Reorder the terms: 3.75 + -3.75 + -6y + y2 = 0 + -3.75 Combine like terms: 3.75 + -3.75 = 0.00 0.00 + -6y + y2 = 0 + -3.75 -6y + y2 = 0 + -3.75 Combine like terms: 0 + -3.75 = -3.75 -6y + y2 = -3.75 The y term is -6y. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6y + 9 + y2 = -3.75 + 9 Reorder the terms: 9 + -6y + y2 = -3.75 + 9 Combine like terms: -3.75 + 9 = 5.25 9 + -6y + y2 = 5.25 Factor a perfect square on the left side: (y + -3)(y + -3) = 5.25 Calculate the square root of the right side: 2.291287847 Break this problem into two subproblems by setting (y + -3) equal to 2.291287847 and -2.291287847.Subproblem 1
y + -3 = 2.291287847 Simplifying y + -3 = 2.291287847 Reorder the terms: -3 + y = 2.291287847 Solving -3 + y = 2.291287847 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + y = 2.291287847 + 3 Combine like terms: -3 + 3 = 0 0 + y = 2.291287847 + 3 y = 2.291287847 + 3 Combine like terms: 2.291287847 + 3 = 5.291287847 y = 5.291287847 Simplifying y = 5.291287847Subproblem 2
y + -3 = -2.291287847 Simplifying y + -3 = -2.291287847 Reorder the terms: -3 + y = -2.291287847 Solving -3 + y = -2.291287847 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + y = -2.291287847 + 3 Combine like terms: -3 + 3 = 0 0 + y = -2.291287847 + 3 y = -2.291287847 + 3 Combine like terms: -2.291287847 + 3 = 0.708712153 y = 0.708712153 Simplifying y = 0.708712153Solution
The solution to the problem is based on the solutions from the subproblems. y = {5.291287847, 0.708712153}
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