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Simplifying 8y2 + 6y + -3 = 0 Reorder the terms: -3 + 6y + 8y2 = 0 Solving -3 + 6y + 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'. -0.375 + 0.75y + y2 = 0 Move the constant term to the right: Add '0.375' to each side of the equation. -0.375 + 0.75y + 0.375 + y2 = 0 + 0.375 Reorder the terms: -0.375 + 0.375 + 0.75y + y2 = 0 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + 0.75y + y2 = 0 + 0.375 0.75y + y2 = 0 + 0.375 Combine like terms: 0 + 0.375 = 0.375 0.75y + y2 = 0.375 The y term is 0.75y. Take half its coefficient (0.375). Square it (0.140625) and add it to both sides. Add '0.140625' to each side of the equation. 0.75y + 0.140625 + y2 = 0.375 + 0.140625 Reorder the terms: 0.140625 + 0.75y + y2 = 0.375 + 0.140625 Combine like terms: 0.375 + 0.140625 = 0.515625 0.140625 + 0.75y + y2 = 0.515625 Factor a perfect square on the left side: (y + 0.375)(y + 0.375) = 0.515625 Calculate the square root of the right side: 0.718070331 Break this problem into two subproblems by setting (y + 0.375) equal to 0.718070331 and -0.718070331.Subproblem 1
y + 0.375 = 0.718070331 Simplifying y + 0.375 = 0.718070331 Reorder the terms: 0.375 + y = 0.718070331 Solving 0.375 + y = 0.718070331 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + y = 0.718070331 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + y = 0.718070331 + -0.375 y = 0.718070331 + -0.375 Combine like terms: 0.718070331 + -0.375 = 0.343070331 y = 0.343070331 Simplifying y = 0.343070331Subproblem 2
y + 0.375 = -0.718070331 Simplifying y + 0.375 = -0.718070331 Reorder the terms: 0.375 + y = -0.718070331 Solving 0.375 + y = -0.718070331 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + y = -0.718070331 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + y = -0.718070331 + -0.375 y = -0.718070331 + -0.375 Combine like terms: -0.718070331 + -0.375 = -1.093070331 y = -1.093070331 Simplifying y = -1.093070331Solution
The solution to the problem is based on the solutions from the subproblems. y = {0.343070331, -1.093070331}
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