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Simplifying 4y2 + -5 = 3y Reorder the terms: -5 + 4y2 = 3y Solving -5 + 4y2 = 3y Solving for variable 'y'. Reorder the terms: -5 + -3y + 4y2 = 3y + -3y Combine like terms: 3y + -3y = 0 -5 + -3y + 4y2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -1.25 + -0.75y + y2 = 0 Move the constant term to the right: Add '1.25' to each side of the equation. -1.25 + -0.75y + 1.25 + y2 = 0 + 1.25 Reorder the terms: -1.25 + 1.25 + -0.75y + y2 = 0 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + -0.75y + y2 = 0 + 1.25 -0.75y + y2 = 0 + 1.25 Combine like terms: 0 + 1.25 = 1.25 -0.75y + y2 = 1.25 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 = 1.25 + 0.140625 Reorder the terms: 0.140625 + -0.75y + y2 = 1.25 + 0.140625 Combine like terms: 1.25 + 0.140625 = 1.390625 0.140625 + -0.75y + y2 = 1.390625 Factor a perfect square on the left side: (y + -0.375)(y + -0.375) = 1.390625 Calculate the square root of the right side: 1.179247642 Break this problem into two subproblems by setting (y + -0.375) equal to 1.179247642 and -1.179247642.Subproblem 1
y + -0.375 = 1.179247642 Simplifying y + -0.375 = 1.179247642 Reorder the terms: -0.375 + y = 1.179247642 Solving -0.375 + y = 1.179247642 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 = 1.179247642 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + y = 1.179247642 + 0.375 y = 1.179247642 + 0.375 Combine like terms: 1.179247642 + 0.375 = 1.554247642 y = 1.554247642 Simplifying y = 1.554247642Subproblem 2
y + -0.375 = -1.179247642 Simplifying y + -0.375 = -1.179247642 Reorder the terms: -0.375 + y = -1.179247642 Solving -0.375 + y = -1.179247642 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 = -1.179247642 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + y = -1.179247642 + 0.375 y = -1.179247642 + 0.375 Combine like terms: -1.179247642 + 0.375 = -0.804247642 y = -0.804247642 Simplifying y = -0.804247642Solution
The solution to the problem is based on the solutions from the subproblems. y = {1.554247642, -0.804247642}
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