y^2-12y+34=0

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Solution for y^2-12y+34=0 equation:


Simplifying
y2 + -12y + 34 = 0

Reorder the terms:
34 + -12y + y2 = 0

Solving
34 + -12y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '-34' to each side of the equation.
34 + -12y + -34 + y2 = 0 + -34

Reorder the terms:
34 + -34 + -12y + y2 = 0 + -34

Combine like terms: 34 + -34 = 0
0 + -12y + y2 = 0 + -34
-12y + y2 = 0 + -34

Combine like terms: 0 + -34 = -34
-12y + y2 = -34

The y term is -12y.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12y + 36 + y2 = -34 + 36

Reorder the terms:
36 + -12y + y2 = -34 + 36

Combine like terms: -34 + 36 = 2
36 + -12y + y2 = 2

Factor a perfect square on the left side:
(y + -6)(y + -6) = 2

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(y + -6) equal to 1.414213562 and -1.414213562.

Subproblem 1

y + -6 = 1.414213562 Simplifying y + -6 = 1.414213562 Reorder the terms: -6 + y = 1.414213562 Solving -6 + y = 1.414213562 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + y = 1.414213562 + 6 Combine like terms: -6 + 6 = 0 0 + y = 1.414213562 + 6 y = 1.414213562 + 6 Combine like terms: 1.414213562 + 6 = 7.414213562 y = 7.414213562 Simplifying y = 7.414213562

Subproblem 2

y + -6 = -1.414213562 Simplifying y + -6 = -1.414213562 Reorder the terms: -6 + y = -1.414213562 Solving -6 + y = -1.414213562 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + y = -1.414213562 + 6 Combine like terms: -6 + 6 = 0 0 + y = -1.414213562 + 6 y = -1.414213562 + 6 Combine like terms: -1.414213562 + 6 = 4.585786438 y = 4.585786438 Simplifying y = 4.585786438

Solution

The solution to the problem is based on the solutions from the subproblems. y = {7.414213562, 4.585786438}

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