4y^2-20y+1=

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Solution for 4y^2-20y+1= equation:


Simplifying
4y2 + -20y + 1 = 0

Reorder the terms:
1 + -20y + 4y2 = 0

Solving
1 + -20y + 4y2 = 0

Solving for variable 'y'.

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

Divide each side by '4'.
0.25 + -5y + y2 = 0

Move the constant term to the right:

Add '-0.25' to each side of the equation.
0.25 + -5y + -0.25 + y2 = 0 + -0.25

Reorder the terms:
0.25 + -0.25 + -5y + y2 = 0 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + -5y + y2 = 0 + -0.25
-5y + y2 = 0 + -0.25

Combine like terms: 0 + -0.25 = -0.25
-5y + y2 = -0.25

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 = -0.25 + 6.25

Reorder the terms:
6.25 + -5y + y2 = -0.25 + 6.25

Combine like terms: -0.25 + 6.25 = 6
6.25 + -5y + y2 = 6

Factor a perfect square on the left side:
(y + -2.5)(y + -2.5) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(y + -2.5) equal to 2.449489743 and -2.449489743.

Subproblem 1

y + -2.5 = 2.449489743 Simplifying y + -2.5 = 2.449489743 Reorder the terms: -2.5 + y = 2.449489743 Solving -2.5 + y = 2.449489743 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 = 2.449489743 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + y = 2.449489743 + 2.5 y = 2.449489743 + 2.5 Combine like terms: 2.449489743 + 2.5 = 4.949489743 y = 4.949489743 Simplifying y = 4.949489743

Subproblem 2

y + -2.5 = -2.449489743 Simplifying y + -2.5 = -2.449489743 Reorder the terms: -2.5 + y = -2.449489743 Solving -2.5 + y = -2.449489743 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 = -2.449489743 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + y = -2.449489743 + 2.5 y = -2.449489743 + 2.5 Combine like terms: -2.449489743 + 2.5 = 0.050510257 y = 0.050510257 Simplifying y = 0.050510257

Solution

The solution to the problem is based on the solutions from the subproblems. y = {4.949489743, 0.050510257}

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