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Simplifying 10y2 + -16y + 5 = 0 Reorder the terms: 5 + -16y + 10y2 = 0 Solving 5 + -16y + 10y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by 10 the coefficient of the squared term: Divide each side by '10'. 0.5 + -1.6y + y2 = 0 Move the constant term to the right: Add '-0.5' to each side of the equation. 0.5 + -1.6y + -0.5 + y2 = 0 + -0.5 Reorder the terms: 0.5 + -0.5 + -1.6y + y2 = 0 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + -1.6y + y2 = 0 + -0.5 -1.6y + y2 = 0 + -0.5 Combine like terms: 0 + -0.5 = -0.5 -1.6y + y2 = -0.5 The y term is -1.6y. Take half its coefficient (-0.8). Square it (0.64) and add it to both sides. Add '0.64' to each side of the equation. -1.6y + 0.64 + y2 = -0.5 + 0.64 Reorder the terms: 0.64 + -1.6y + y2 = -0.5 + 0.64 Combine like terms: -0.5 + 0.64 = 0.14 0.64 + -1.6y + y2 = 0.14 Factor a perfect square on the left side: (y + -0.8)(y + -0.8) = 0.14 Calculate the square root of the right side: 0.374165739 Break this problem into two subproblems by setting (y + -0.8) equal to 0.374165739 and -0.374165739.Subproblem 1
y + -0.8 = 0.374165739 Simplifying y + -0.8 = 0.374165739 Reorder the terms: -0.8 + y = 0.374165739 Solving -0.8 + y = 0.374165739 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.8' to each side of the equation. -0.8 + 0.8 + y = 0.374165739 + 0.8 Combine like terms: -0.8 + 0.8 = 0.0 0.0 + y = 0.374165739 + 0.8 y = 0.374165739 + 0.8 Combine like terms: 0.374165739 + 0.8 = 1.174165739 y = 1.174165739 Simplifying y = 1.174165739Subproblem 2
y + -0.8 = -0.374165739 Simplifying y + -0.8 = -0.374165739 Reorder the terms: -0.8 + y = -0.374165739 Solving -0.8 + y = -0.374165739 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.8' to each side of the equation. -0.8 + 0.8 + y = -0.374165739 + 0.8 Combine like terms: -0.8 + 0.8 = 0.0 0.0 + y = -0.374165739 + 0.8 y = -0.374165739 + 0.8 Combine like terms: -0.374165739 + 0.8 = 0.425834261 y = 0.425834261 Simplifying y = 0.425834261Solution
The solution to the problem is based on the solutions from the subproblems. y = {1.174165739, 0.425834261}
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