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Simplifying 4y2 + -8y + -3 = 0 Reorder the terms: -3 + -8y + 4y2 = 0 Solving -3 + -8y + 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'. -0.75 + -2y + y2 = 0 Move the constant term to the right: Add '0.75' to each side of the equation. -0.75 + -2y + 0.75 + y2 = 0 + 0.75 Reorder the terms: -0.75 + 0.75 + -2y + y2 = 0 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + -2y + y2 = 0 + 0.75 -2y + y2 = 0 + 0.75 Combine like terms: 0 + 0.75 = 0.75 -2y + y2 = 0.75 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 = 0.75 + 1 Reorder the terms: 1 + -2y + y2 = 0.75 + 1 Combine like terms: 0.75 + 1 = 1.75 1 + -2y + y2 = 1.75 Factor a perfect square on the left side: (y + -1)(y + -1) = 1.75 Calculate the square root of the right side: 1.322875656 Break this problem into two subproblems by setting (y + -1) equal to 1.322875656 and -1.322875656.Subproblem 1
y + -1 = 1.322875656 Simplifying y + -1 = 1.322875656 Reorder the terms: -1 + y = 1.322875656 Solving -1 + y = 1.322875656 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 = 1.322875656 + 1 Combine like terms: -1 + 1 = 0 0 + y = 1.322875656 + 1 y = 1.322875656 + 1 Combine like terms: 1.322875656 + 1 = 2.322875656 y = 2.322875656 Simplifying y = 2.322875656Subproblem 2
y + -1 = -1.322875656 Simplifying y + -1 = -1.322875656 Reorder the terms: -1 + y = -1.322875656 Solving -1 + y = -1.322875656 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 = -1.322875656 + 1 Combine like terms: -1 + 1 = 0 0 + y = -1.322875656 + 1 y = -1.322875656 + 1 Combine like terms: -1.322875656 + 1 = -0.322875656 y = -0.322875656 Simplifying y = -0.322875656Solution
The solution to the problem is based on the solutions from the subproblems. y = {2.322875656, -0.322875656}
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