361x^2-38x-1=0

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Solution for 361x^2-38x-1=0 equation:


Simplifying
361x2 + -38x + -1 = 0

Reorder the terms:
-1 + -38x + 361x2 = 0

Solving
-1 + -38x + 361x2 = 0

Solving for variable 'x'.

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

Divide each side by '361'.
-0.002770083102 + -0.1052631579x + x2 = 0

Move the constant term to the right:

Add '0.002770083102' to each side of the equation.
-0.002770083102 + -0.1052631579x + 0.002770083102 + x2 = 0 + 0.002770083102

Reorder the terms:
-0.002770083102 + 0.002770083102 + -0.1052631579x + x2 = 0 + 0.002770083102

Combine like terms: -0.002770083102 + 0.002770083102 = 0.000000000000
0.000000000000 + -0.1052631579x + x2 = 0 + 0.002770083102
-0.1052631579x + x2 = 0 + 0.002770083102

Combine like terms: 0 + 0.002770083102 = 0.002770083102
-0.1052631579x + x2 = 0.002770083102

The x term is -0.1052631579x.  Take half its coefficient (-0.05263157895).
Square it (0.002770083103) and add it to both sides.

Add '0.002770083103' to each side of the equation.
-0.1052631579x + 0.002770083103 + x2 = 0.002770083102 + 0.002770083103

Reorder the terms:
0.002770083103 + -0.1052631579x + x2 = 0.002770083102 + 0.002770083103

Combine like terms: 0.002770083102 + 0.002770083103 = 0.005540166205
0.002770083103 + -0.1052631579x + x2 = 0.005540166205

Factor a perfect square on the left side:
(x + -0.05263157895)(x + -0.05263157895) = 0.005540166205

Calculate the square root of the right side: 0.074432293

Break this problem into two subproblems by setting 
(x + -0.05263157895) equal to 0.074432293 and -0.074432293.

Subproblem 1

x + -0.05263157895 = 0.074432293 Simplifying x + -0.05263157895 = 0.074432293 Reorder the terms: -0.05263157895 + x = 0.074432293 Solving -0.05263157895 + x = 0.074432293 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05263157895' to each side of the equation. -0.05263157895 + 0.05263157895 + x = 0.074432293 + 0.05263157895 Combine like terms: -0.05263157895 + 0.05263157895 = 0.00000000000 0.00000000000 + x = 0.074432293 + 0.05263157895 x = 0.074432293 + 0.05263157895 Combine like terms: 0.074432293 + 0.05263157895 = 0.12706387195 x = 0.12706387195 Simplifying x = 0.12706387195

Subproblem 2

x + -0.05263157895 = -0.074432293 Simplifying x + -0.05263157895 = -0.074432293 Reorder the terms: -0.05263157895 + x = -0.074432293 Solving -0.05263157895 + x = -0.074432293 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05263157895' to each side of the equation. -0.05263157895 + 0.05263157895 + x = -0.074432293 + 0.05263157895 Combine like terms: -0.05263157895 + 0.05263157895 = 0.00000000000 0.00000000000 + x = -0.074432293 + 0.05263157895 x = -0.074432293 + 0.05263157895 Combine like terms: -0.074432293 + 0.05263157895 = -0.02180071405 x = -0.02180071405 Simplifying x = -0.02180071405

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.12706387195, -0.02180071405}

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