13x^2-8x+1=0

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Solution for 13x^2-8x+1=0 equation:


Simplifying
13x2 + -8x + 1 = 0

Reorder the terms:
1 + -8x + 13x2 = 0

Solving
1 + -8x + 13x2 = 0

Solving for variable 'x'.

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

Divide each side by '13'.
0.07692307692 + -0.6153846154x + x2 = 0

Move the constant term to the right:

Add '-0.07692307692' to each side of the equation.
0.07692307692 + -0.6153846154x + -0.07692307692 + x2 = 0 + -0.07692307692

Reorder the terms:
0.07692307692 + -0.07692307692 + -0.6153846154x + x2 = 0 + -0.07692307692

Combine like terms: 0.07692307692 + -0.07692307692 = 0.00000000000
0.00000000000 + -0.6153846154x + x2 = 0 + -0.07692307692
-0.6153846154x + x2 = 0 + -0.07692307692

Combine like terms: 0 + -0.07692307692 = -0.07692307692
-0.6153846154x + x2 = -0.07692307692

The x term is -0.6153846154x.  Take half its coefficient (-0.3076923077).
Square it (0.09467455622) and add it to both sides.

Add '0.09467455622' to each side of the equation.
-0.6153846154x + 0.09467455622 + x2 = -0.07692307692 + 0.09467455622

Reorder the terms:
0.09467455622 + -0.6153846154x + x2 = -0.07692307692 + 0.09467455622

Combine like terms: -0.07692307692 + 0.09467455622 = 0.0177514793
0.09467455622 + -0.6153846154x + x2 = 0.0177514793

Factor a perfect square on the left side:
(x + -0.3076923077)(x + -0.3076923077) = 0.0177514793

Calculate the square root of the right side: 0.133234678

Break this problem into two subproblems by setting 
(x + -0.3076923077) equal to 0.133234678 and -0.133234678.

Subproblem 1

x + -0.3076923077 = 0.133234678 Simplifying x + -0.3076923077 = 0.133234678 Reorder the terms: -0.3076923077 + x = 0.133234678 Solving -0.3076923077 + x = 0.133234678 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3076923077' to each side of the equation. -0.3076923077 + 0.3076923077 + x = 0.133234678 + 0.3076923077 Combine like terms: -0.3076923077 + 0.3076923077 = 0.0000000000 0.0000000000 + x = 0.133234678 + 0.3076923077 x = 0.133234678 + 0.3076923077 Combine like terms: 0.133234678 + 0.3076923077 = 0.4409269857 x = 0.4409269857 Simplifying x = 0.4409269857

Subproblem 2

x + -0.3076923077 = -0.133234678 Simplifying x + -0.3076923077 = -0.133234678 Reorder the terms: -0.3076923077 + x = -0.133234678 Solving -0.3076923077 + x = -0.133234678 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3076923077' to each side of the equation. -0.3076923077 + 0.3076923077 + x = -0.133234678 + 0.3076923077 Combine like terms: -0.3076923077 + 0.3076923077 = 0.0000000000 0.0000000000 + x = -0.133234678 + 0.3076923077 x = -0.133234678 + 0.3076923077 Combine like terms: -0.133234678 + 0.3076923077 = 0.1744576297 x = 0.1744576297 Simplifying x = 0.1744576297

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.4409269857, 0.1744576297}

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