2+y(y-5)=

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Solution for 2+y(y-5)= equation: 


Simplifying
2 + y(y + -5) = 0

Reorder the terms:
2 + y(-5 + y) = 0
2 + (-5 * y + y * y) = 0
2 + (-5y + y2) = 0

Solving
2 + -5y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -5y + -2 + y2 = 0 + -2

Reorder the terms:
2 + -2 + -5y + y2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -5y + y2 = 0 + -2
-5y + y2 = 0 + -2

Combine like terms: 0 + -2 = -2
-5y + y2 = -2

The y term is -5y.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5y + 6.25 + y2 = -2 + 6.25

Reorder the terms:
6.25 + -5y + y2 = -2 + 6.25

Combine like terms: -2 + 6.25 = 4.25
6.25 + -5y + y2 = 4.25

Factor a perfect square on the left side:
(y + -2.5)(y + -2.5) = 4.25

Calculate the square root of the right side: 2.061552813

Break this problem into two subproblems by setting 
(y + -2.5) equal to 2.061552813 and -2.061552813.


Subproblem 1
y + -2.5 = 2.061552813

Simplifying
y + -2.5 = 2.061552813

Reorder the terms:
-2.5 + y = 2.061552813

Solving
-2.5 + y = 2.061552813

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '2.5' to each side of the equation.
-2.5 + 2.5 + y = 2.061552813 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + y = 2.061552813 + 2.5
y = 2.061552813 + 2.5

Combine like terms: 2.061552813 + 2.5 = 4.561552813
y = 4.561552813

Simplifying
y = 4.561552813


Subproblem 2
y + -2.5 = -2.061552813

Simplifying
y + -2.5 = -2.061552813

Reorder the terms:
-2.5 + y = -2.061552813

Solving
-2.5 + y = -2.061552813

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '2.5' to each side of the equation.
-2.5 + 2.5 + y = -2.061552813 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + y = -2.061552813 + 2.5
y = -2.061552813 + 2.5

Combine like terms: -2.061552813 + 2.5 = 0.438447187
y = 0.438447187

Simplifying
y = 0.438447187


Solution
The solution to the problem is based on the solutions
from the subproblems.
y = {4.561552813, 0.438447187}

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