.25x^2-5x+1=0

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Solution for .25x^2-5x+1=0 equation:


Simplifying
0.25x2 + -5x + 1 = 0

Reorder the terms:
1 + -5x + 0.25x2 = 0

Solving
1 + -5x + 0.25x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.25'.
4 + -20x + x2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -20x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + -20x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -20x + x2 = 0 + -4
-20x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
-20x + x2 = -4

The x term is -20x.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20x + 100 + x2 = -4 + 100

Reorder the terms:
100 + -20x + x2 = -4 + 100

Combine like terms: -4 + 100 = 96
100 + -20x + x2 = 96

Factor a perfect square on the left side:
(x + -10)(x + -10) = 96

Calculate the square root of the right side: 9.797958971

Break this problem into two subproblems by setting 
(x + -10) equal to 9.797958971 and -9.797958971.

Subproblem 1

x + -10 = 9.797958971 Simplifying x + -10 = 9.797958971 Reorder the terms: -10 + x = 9.797958971 Solving -10 + x = 9.797958971 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = 9.797958971 + 10 Combine like terms: -10 + 10 = 0 0 + x = 9.797958971 + 10 x = 9.797958971 + 10 Combine like terms: 9.797958971 + 10 = 19.797958971 x = 19.797958971 Simplifying x = 19.797958971

Subproblem 2

x + -10 = -9.797958971 Simplifying x + -10 = -9.797958971 Reorder the terms: -10 + x = -9.797958971 Solving -10 + x = -9.797958971 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = -9.797958971 + 10 Combine like terms: -10 + 10 = 0 0 + x = -9.797958971 + 10 x = -9.797958971 + 10 Combine like terms: -9.797958971 + 10 = 0.202041029 x = 0.202041029 Simplifying x = 0.202041029

Solution

The solution to the problem is based on the solutions from the subproblems. x = {19.797958971, 0.202041029}

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