2y^2-13y+14=0

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Solution for 2y^2-13y+14=0 equation:


Simplifying
2y2 + -13y + 14 = 0

Reorder the terms:
14 + -13y + 2y2 = 0

Solving
14 + -13y + 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'.
7 + -6.5y + y2 = 0

Move the constant term to the right:

Add '-7' to each side of the equation.
7 + -6.5y + -7 + y2 = 0 + -7

Reorder the terms:
7 + -7 + -6.5y + y2 = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -6.5y + y2 = 0 + -7
-6.5y + y2 = 0 + -7

Combine like terms: 0 + -7 = -7
-6.5y + y2 = -7

The y term is -6.5y.  Take half its coefficient (-3.25).
Square it (10.5625) and add it to both sides.

Add '10.5625' to each side of the equation.
-6.5y + 10.5625 + y2 = -7 + 10.5625

Reorder the terms:
10.5625 + -6.5y + y2 = -7 + 10.5625

Combine like terms: -7 + 10.5625 = 3.5625
10.5625 + -6.5y + y2 = 3.5625

Factor a perfect square on the left side:
(y + -3.25)(y + -3.25) = 3.5625

Calculate the square root of the right side: 1.887458609

Break this problem into two subproblems by setting 
(y + -3.25) equal to 1.887458609 and -1.887458609.

Subproblem 1

y + -3.25 = 1.887458609 Simplifying y + -3.25 = 1.887458609 Reorder the terms: -3.25 + y = 1.887458609 Solving -3.25 + y = 1.887458609 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + y = 1.887458609 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + y = 1.887458609 + 3.25 y = 1.887458609 + 3.25 Combine like terms: 1.887458609 + 3.25 = 5.137458609 y = 5.137458609 Simplifying y = 5.137458609

Subproblem 2

y + -3.25 = -1.887458609 Simplifying y + -3.25 = -1.887458609 Reorder the terms: -3.25 + y = -1.887458609 Solving -3.25 + y = -1.887458609 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + y = -1.887458609 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + y = -1.887458609 + 3.25 y = -1.887458609 + 3.25 Combine like terms: -1.887458609 + 3.25 = 1.362541391 y = 1.362541391 Simplifying y = 1.362541391

Solution

The solution to the problem is based on the solutions from the subproblems. y = {5.137458609, 1.362541391}

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