19x^2-14x-1=0

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Solution for 19x^2-14x-1=0 equation:


Simplifying
19x2 + -14x + -1 = 0

Reorder the terms:
-1 + -14x + 19x2 = 0

Solving
-1 + -14x + 19x2 = 0

Solving for variable 'x'.

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

Divide each side by '19'.
-0.05263157895 + -0.7368421053x + x2 = 0

Move the constant term to the right:

Add '0.05263157895' to each side of the equation.
-0.05263157895 + -0.7368421053x + 0.05263157895 + x2 = 0 + 0.05263157895

Reorder the terms:
-0.05263157895 + 0.05263157895 + -0.7368421053x + x2 = 0 + 0.05263157895

Combine like terms: -0.05263157895 + 0.05263157895 = 0.00000000000
0.00000000000 + -0.7368421053x + x2 = 0 + 0.05263157895
-0.7368421053x + x2 = 0 + 0.05263157895

Combine like terms: 0 + 0.05263157895 = 0.05263157895
-0.7368421053x + x2 = 0.05263157895

The x term is -0.7368421053x.  Take half its coefficient (-0.3684210527).
Square it (0.1357340721) and add it to both sides.

Add '0.1357340721' to each side of the equation.
-0.7368421053x + 0.1357340721 + x2 = 0.05263157895 + 0.1357340721

Reorder the terms:
0.1357340721 + -0.7368421053x + x2 = 0.05263157895 + 0.1357340721

Combine like terms: 0.05263157895 + 0.1357340721 = 0.18836565105
0.1357340721 + -0.7368421053x + x2 = 0.18836565105

Factor a perfect square on the left side:
(x + -0.3684210527)(x + -0.3684210527) = 0.18836565105

Calculate the square root of the right side: 0.434011119

Break this problem into two subproblems by setting 
(x + -0.3684210527) equal to 0.434011119 and -0.434011119.

Subproblem 1

x + -0.3684210527 = 0.434011119 Simplifying x + -0.3684210527 = 0.434011119 Reorder the terms: -0.3684210527 + x = 0.434011119 Solving -0.3684210527 + x = 0.434011119 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3684210527' to each side of the equation. -0.3684210527 + 0.3684210527 + x = 0.434011119 + 0.3684210527 Combine like terms: -0.3684210527 + 0.3684210527 = 0.0000000000 0.0000000000 + x = 0.434011119 + 0.3684210527 x = 0.434011119 + 0.3684210527 Combine like terms: 0.434011119 + 0.3684210527 = 0.8024321717 x = 0.8024321717 Simplifying x = 0.8024321717

Subproblem 2

x + -0.3684210527 = -0.434011119 Simplifying x + -0.3684210527 = -0.434011119 Reorder the terms: -0.3684210527 + x = -0.434011119 Solving -0.3684210527 + x = -0.434011119 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3684210527' to each side of the equation. -0.3684210527 + 0.3684210527 + x = -0.434011119 + 0.3684210527 Combine like terms: -0.3684210527 + 0.3684210527 = 0.0000000000 0.0000000000 + x = -0.434011119 + 0.3684210527 x = -0.434011119 + 0.3684210527 Combine like terms: -0.434011119 + 0.3684210527 = -0.0655900663 x = -0.0655900663 Simplifying x = -0.0655900663

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.8024321717, -0.0655900663}

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