5y^2-40y+44=0

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Solution for 5y^2-40y+44=0 equation:


Simplifying
5y2 + -40y + 44 = 0

Reorder the terms:
44 + -40y + 5y2 = 0

Solving
44 + -40y + 5y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
8.8 + -8y + y2 = 0

Move the constant term to the right:

Add '-8.8' to each side of the equation.
8.8 + -8y + -8.8 + y2 = 0 + -8.8

Reorder the terms:
8.8 + -8.8 + -8y + y2 = 0 + -8.8

Combine like terms: 8.8 + -8.8 = 0.0
0.0 + -8y + y2 = 0 + -8.8
-8y + y2 = 0 + -8.8

Combine like terms: 0 + -8.8 = -8.8
-8y + y2 = -8.8

The y term is -8y.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8y + 16 + y2 = -8.8 + 16

Reorder the terms:
16 + -8y + y2 = -8.8 + 16

Combine like terms: -8.8 + 16 = 7.2
16 + -8y + y2 = 7.2

Factor a perfect square on the left side:
(y + -4)(y + -4) = 7.2

Calculate the square root of the right side: 2.683281573

Break this problem into two subproblems by setting 
(y + -4) equal to 2.683281573 and -2.683281573.

Subproblem 1

y + -4 = 2.683281573 Simplifying y + -4 = 2.683281573 Reorder the terms: -4 + y = 2.683281573 Solving -4 + y = 2.683281573 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + y = 2.683281573 + 4 Combine like terms: -4 + 4 = 0 0 + y = 2.683281573 + 4 y = 2.683281573 + 4 Combine like terms: 2.683281573 + 4 = 6.683281573 y = 6.683281573 Simplifying y = 6.683281573

Subproblem 2

y + -4 = -2.683281573 Simplifying y + -4 = -2.683281573 Reorder the terms: -4 + y = -2.683281573 Solving -4 + y = -2.683281573 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + y = -2.683281573 + 4 Combine like terms: -4 + 4 = 0 0 + y = -2.683281573 + 4 y = -2.683281573 + 4 Combine like terms: -2.683281573 + 4 = 1.316718427 y = 1.316718427 Simplifying y = 1.316718427

Solution

The solution to the problem is based on the solutions from the subproblems. y = {6.683281573, 1.316718427}

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