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Simplifying 4y2 + 4y + -17 = 0 Reorder the terms: -17 + 4y + 4y2 = 0 Solving -17 + 4y + 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'. -4.25 + y + y2 = 0 Move the constant term to the right: Add '4.25' to each side of the equation. -4.25 + y + 4.25 + y2 = 0 + 4.25 Reorder the terms: -4.25 + 4.25 + y + y2 = 0 + 4.25 Combine like terms: -4.25 + 4.25 = 0.00 0.00 + y + y2 = 0 + 4.25 y + y2 = 0 + 4.25 Combine like terms: 0 + 4.25 = 4.25 y + y2 = 4.25 The y term is y. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. + 0.25 + y2 = 4.25 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + y2 = 4.25 + 0.25 Combine like terms: 4.25 + 0.25 = 4.5 1.25 + y2 = 4.5 Factor a perfect square on the left side: (y + 0.5)(y + 0.5) = 4.5 Calculate the square root of the right side: 2.121320344 Break this problem into two subproblems by setting (y + 0.5) equal to 2.121320344 and -2.121320344.Subproblem 1
y + 0.5 = 2.121320344 Simplifying y + 0.5 = 2.121320344 Reorder the terms: 0.5 + y = 2.121320344 Solving 0.5 + y = 2.121320344 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y = 2.121320344 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = 2.121320344 + -0.5 y = 2.121320344 + -0.5 Combine like terms: 2.121320344 + -0.5 = 1.621320344 y = 1.621320344 Simplifying y = 1.621320344Subproblem 2
y + 0.5 = -2.121320344 Simplifying y + 0.5 = -2.121320344 Reorder the terms: 0.5 + y = -2.121320344 Solving 0.5 + y = -2.121320344 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y = -2.121320344 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = -2.121320344 + -0.5 y = -2.121320344 + -0.5 Combine like terms: -2.121320344 + -0.5 = -2.621320344 y = -2.621320344 Simplifying y = -2.621320344Solution
The solution to the problem is based on the solutions from the subproblems. y = {1.621320344, -2.621320344}
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