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Simplifying 2y2 + -28y + 49 = 0 Reorder the terms: 49 + -28y + 2y2 = 0 Solving 49 + -28y + 2y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 24.5 + -14y + y2 = 0 Move the constant term to the right: Add '-24.5' to each side of the equation. 24.5 + -14y + -24.5 + y2 = 0 + -24.5 Reorder the terms: 24.5 + -24.5 + -14y + y2 = 0 + -24.5 Combine like terms: 24.5 + -24.5 = 0.0 0.0 + -14y + y2 = 0 + -24.5 -14y + y2 = 0 + -24.5 Combine like terms: 0 + -24.5 = -24.5 -14y + y2 = -24.5 The y term is -14y. Take half its coefficient (-7). Square it (49) and add it to both sides. Add '49' to each side of the equation. -14y + 49 + y2 = -24.5 + 49 Reorder the terms: 49 + -14y + y2 = -24.5 + 49 Combine like terms: -24.5 + 49 = 24.5 49 + -14y + y2 = 24.5 Factor a perfect square on the left side: (y + -7)(y + -7) = 24.5 Calculate the square root of the right side: 4.949747468 Break this problem into two subproblems by setting (y + -7) equal to 4.949747468 and -4.949747468.Subproblem 1
y + -7 = 4.949747468 Simplifying y + -7 = 4.949747468 Reorder the terms: -7 + y = 4.949747468 Solving -7 + y = 4.949747468 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + y = 4.949747468 + 7 Combine like terms: -7 + 7 = 0 0 + y = 4.949747468 + 7 y = 4.949747468 + 7 Combine like terms: 4.949747468 + 7 = 11.949747468 y = 11.949747468 Simplifying y = 11.949747468Subproblem 2
y + -7 = -4.949747468 Simplifying y + -7 = -4.949747468 Reorder the terms: -7 + y = -4.949747468 Solving -7 + y = -4.949747468 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + y = -4.949747468 + 7 Combine like terms: -7 + 7 = 0 0 + y = -4.949747468 + 7 y = -4.949747468 + 7 Combine like terms: -4.949747468 + 7 = 2.050252532 y = 2.050252532 Simplifying y = 2.050252532Solution
The solution to the problem is based on the solutions from the subproblems. y = {11.949747468, 2.050252532}
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