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Simplifying 8y2 + -16y + -1 = 0 Reorder the terms: -1 + -16y + 8y2 = 0 Solving -1 + -16y + 8y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. -0.125 + -2y + y2 = 0 Move the constant term to the right: Add '0.125' to each side of the equation. -0.125 + -2y + 0.125 + y2 = 0 + 0.125 Reorder the terms: -0.125 + 0.125 + -2y + y2 = 0 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + -2y + y2 = 0 + 0.125 -2y + y2 = 0 + 0.125 Combine like terms: 0 + 0.125 = 0.125 -2y + y2 = 0.125 The y term is -2y. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2y + 1 + y2 = 0.125 + 1 Reorder the terms: 1 + -2y + y2 = 0.125 + 1 Combine like terms: 0.125 + 1 = 1.125 1 + -2y + y2 = 1.125 Factor a perfect square on the left side: (y + -1)(y + -1) = 1.125 Calculate the square root of the right side: 1.060660172 Break this problem into two subproblems by setting (y + -1) equal to 1.060660172 and -1.060660172.Subproblem 1
y + -1 = 1.060660172 Simplifying y + -1 = 1.060660172 Reorder the terms: -1 + y = 1.060660172 Solving -1 + y = 1.060660172 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + y = 1.060660172 + 1 Combine like terms: -1 + 1 = 0 0 + y = 1.060660172 + 1 y = 1.060660172 + 1 Combine like terms: 1.060660172 + 1 = 2.060660172 y = 2.060660172 Simplifying y = 2.060660172Subproblem 2
y + -1 = -1.060660172 Simplifying y + -1 = -1.060660172 Reorder the terms: -1 + y = -1.060660172 Solving -1 + y = -1.060660172 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + y = -1.060660172 + 1 Combine like terms: -1 + 1 = 0 0 + y = -1.060660172 + 1 y = -1.060660172 + 1 Combine like terms: -1.060660172 + 1 = -0.060660172 y = -0.060660172 Simplifying y = -0.060660172Solution
The solution to the problem is based on the solutions from the subproblems. y = {2.060660172, -0.060660172}
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