25y^2-80y+6=

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Solution for 25y^2-80y+6= equation:


Simplifying
25y2 + -80y + 6 = 0

Reorder the terms:
6 + -80y + 25y2 = 0

Solving
6 + -80y + 25y2 = 0

Solving for variable 'y'.

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

Divide each side by '25'.
0.24 + -3.2y + y2 = 0

Move the constant term to the right:

Add '-0.24' to each side of the equation.
0.24 + -3.2y + -0.24 + y2 = 0 + -0.24

Reorder the terms:
0.24 + -0.24 + -3.2y + y2 = 0 + -0.24

Combine like terms: 0.24 + -0.24 = 0.00
0.00 + -3.2y + y2 = 0 + -0.24
-3.2y + y2 = 0 + -0.24

Combine like terms: 0 + -0.24 = -0.24
-3.2y + y2 = -0.24

The y term is -3.2y.  Take half its coefficient (-1.6).
Square it (2.56) and add it to both sides.

Add '2.56' to each side of the equation.
-3.2y + 2.56 + y2 = -0.24 + 2.56

Reorder the terms:
2.56 + -3.2y + y2 = -0.24 + 2.56

Combine like terms: -0.24 + 2.56 = 2.32
2.56 + -3.2y + y2 = 2.32

Factor a perfect square on the left side:
(y + -1.6)(y + -1.6) = 2.32

Calculate the square root of the right side: 1.523154621

Break this problem into two subproblems by setting 
(y + -1.6) equal to 1.523154621 and -1.523154621.

Subproblem 1

y + -1.6 = 1.523154621 Simplifying y + -1.6 = 1.523154621 Reorder the terms: -1.6 + y = 1.523154621 Solving -1.6 + y = 1.523154621 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.6' to each side of the equation. -1.6 + 1.6 + y = 1.523154621 + 1.6 Combine like terms: -1.6 + 1.6 = 0.0 0.0 + y = 1.523154621 + 1.6 y = 1.523154621 + 1.6 Combine like terms: 1.523154621 + 1.6 = 3.123154621 y = 3.123154621 Simplifying y = 3.123154621

Subproblem 2

y + -1.6 = -1.523154621 Simplifying y + -1.6 = -1.523154621 Reorder the terms: -1.6 + y = -1.523154621 Solving -1.6 + y = -1.523154621 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.6' to each side of the equation. -1.6 + 1.6 + y = -1.523154621 + 1.6 Combine like terms: -1.6 + 1.6 = 0.0 0.0 + y = -1.523154621 + 1.6 y = -1.523154621 + 1.6 Combine like terms: -1.523154621 + 1.6 = 0.076845379 y = 0.076845379 Simplifying y = 0.076845379

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.123154621, 0.076845379}

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