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Simplifying 5y2 + -3y + -1 = 0 Reorder the terms: -1 + -3y + 5y2 = 0 Solving -1 + -3y + 5y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -0.2 + -0.6y + y2 = 0 Move the constant term to the right: Add '0.2' to each side of the equation. -0.2 + -0.6y + 0.2 + y2 = 0 + 0.2 Reorder the terms: -0.2 + 0.2 + -0.6y + y2 = 0 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + -0.6y + y2 = 0 + 0.2 -0.6y + y2 = 0 + 0.2 Combine like terms: 0 + 0.2 = 0.2 -0.6y + y2 = 0.2 The y term is -0.6y. Take half its coefficient (-0.3). Square it (0.09) and add it to both sides. Add '0.09' to each side of the equation. -0.6y + 0.09 + y2 = 0.2 + 0.09 Reorder the terms: 0.09 + -0.6y + y2 = 0.2 + 0.09 Combine like terms: 0.2 + 0.09 = 0.29 0.09 + -0.6y + y2 = 0.29 Factor a perfect square on the left side: (y + -0.3)(y + -0.3) = 0.29 Calculate the square root of the right side: 0.538516481 Break this problem into two subproblems by setting (y + -0.3) equal to 0.538516481 and -0.538516481.Subproblem 1
y + -0.3 = 0.538516481 Simplifying y + -0.3 = 0.538516481 Reorder the terms: -0.3 + y = 0.538516481 Solving -0.3 + y = 0.538516481 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + y = 0.538516481 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + y = 0.538516481 + 0.3 y = 0.538516481 + 0.3 Combine like terms: 0.538516481 + 0.3 = 0.838516481 y = 0.838516481 Simplifying y = 0.838516481Subproblem 2
y + -0.3 = -0.538516481 Simplifying y + -0.3 = -0.538516481 Reorder the terms: -0.3 + y = -0.538516481 Solving -0.3 + y = -0.538516481 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + y = -0.538516481 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + y = -0.538516481 + 0.3 y = -0.538516481 + 0.3 Combine like terms: -0.538516481 + 0.3 = -0.238516481 y = -0.238516481 Simplifying y = -0.238516481Solution
The solution to the problem is based on the solutions from the subproblems. y = {0.838516481, -0.238516481}
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