2y^2-10y+2=0

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Solution for 2y^2-10y+2=0 equation: 


Simplifying
2y2 + -10y + 2 = 0

Reorder the terms:
2 + -10y + 2y2 = 0

Solving
2 + -10y + 2y2 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '2'.
2(1 + -5y + y2) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(1 + -5y + y2)' equal to zero and attempt to solve:

Simplifying
1 + -5y + y2 = 0

Solving
1 + -5y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -5y + -1 + y2 = 0 + -1

Reorder the terms:
1 + -1 + -5y + y2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -5y + y2 = 0 + -1
-5y + y2 = 0 + -1

Combine like terms: 0 + -1 = -1
-5y + y2 = -1

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 = -1 + 6.25

Reorder the terms:
6.25 + -5y + y2 = -1 + 6.25

Combine like terms: -1 + 6.25 = 5.25
6.25 + -5y + y2 = 5.25

Factor a perfect square on the left side:
(y + -2.5)(y + -2.5) = 5.25

Calculate the square root of the right side: 2.291287847

Break this problem into two subproblems by setting 
(y + -2.5) equal to 2.291287847 and -2.291287847.


Subproblem 1
y + -2.5 = 2.291287847

Simplifying
y + -2.5 = 2.291287847

Reorder the terms:
-2.5 + y = 2.291287847

Solving
-2.5 + y = 2.291287847

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 = 2.291287847 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + y = 2.291287847 + 2.5
y = 2.291287847 + 2.5

Combine like terms: 2.291287847 + 2.5 = 4.791287847
y = 4.791287847

Simplifying
y = 4.791287847


Subproblem 2
y + -2.5 = -2.291287847

Simplifying
y + -2.5 = -2.291287847

Reorder the terms:
-2.5 + y = -2.291287847

Solving
-2.5 + y = -2.291287847

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 = -2.291287847 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + y = -2.291287847 + 2.5
y = -2.291287847 + 2.5

Combine like terms: -2.291287847 + 2.5 = 0.208712153
y = 0.208712153

Simplifying
y = 0.208712153


Solution
The solution to the problem is based on the solutions
from the subproblems.
y = {4.791287847, 0.208712153}
Solution
y = {4.791287847, 0.208712153}

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