y^2-13y+24=0

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Solution for y^2-13y+24=0 equation:


Simplifying
y2 + -13y + 24 = 0

Reorder the terms:
24 + -13y + y2 = 0

Solving
24 + -13y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '-24' to each side of the equation.
24 + -13y + -24 + y2 = 0 + -24

Reorder the terms:
24 + -24 + -13y + y2 = 0 + -24

Combine like terms: 24 + -24 = 0
0 + -13y + y2 = 0 + -24
-13y + y2 = 0 + -24

Combine like terms: 0 + -24 = -24
-13y + y2 = -24

The y term is -13y.  Take half its coefficient (-6.5).
Square it (42.25) and add it to both sides.

Add '42.25' to each side of the equation.
-13y + 42.25 + y2 = -24 + 42.25

Reorder the terms:
42.25 + -13y + y2 = -24 + 42.25

Combine like terms: -24 + 42.25 = 18.25
42.25 + -13y + y2 = 18.25

Factor a perfect square on the left side:
(y + -6.5)(y + -6.5) = 18.25

Calculate the square root of the right side: 4.272001873

Break this problem into two subproblems by setting 
(y + -6.5) equal to 4.272001873 and -4.272001873.

Subproblem 1

y + -6.5 = 4.272001873 Simplifying y + -6.5 = 4.272001873 Reorder the terms: -6.5 + y = 4.272001873 Solving -6.5 + y = 4.272001873 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + y = 4.272001873 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + y = 4.272001873 + 6.5 y = 4.272001873 + 6.5 Combine like terms: 4.272001873 + 6.5 = 10.772001873 y = 10.772001873 Simplifying y = 10.772001873

Subproblem 2

y + -6.5 = -4.272001873 Simplifying y + -6.5 = -4.272001873 Reorder the terms: -6.5 + y = -4.272001873 Solving -6.5 + y = -4.272001873 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + y = -4.272001873 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + y = -4.272001873 + 6.5 y = -4.272001873 + 6.5 Combine like terms: -4.272001873 + 6.5 = 2.227998127 y = 2.227998127 Simplifying y = 2.227998127

Solution

The solution to the problem is based on the solutions from the subproblems. y = {10.772001873, 2.227998127}

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