5x^2-34x-1=0

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Solution for 5x^2-34x-1=0 equation:


Simplifying
5x2 + -34x + -1 = 0

Reorder the terms:
-1 + -34x + 5x2 = 0

Solving
-1 + -34x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-0.2 + -6.8x + x2 = 0

Move the constant term to the right:

Add '0.2' to each side of the equation.
-0.2 + -6.8x + 0.2 + x2 = 0 + 0.2

Reorder the terms:
-0.2 + 0.2 + -6.8x + x2 = 0 + 0.2

Combine like terms: -0.2 + 0.2 = 0.0
0.0 + -6.8x + x2 = 0 + 0.2
-6.8x + x2 = 0 + 0.2

Combine like terms: 0 + 0.2 = 0.2
-6.8x + x2 = 0.2

The x term is -6.8x.  Take half its coefficient (-3.4).
Square it (11.56) and add it to both sides.

Add '11.56' to each side of the equation.
-6.8x + 11.56 + x2 = 0.2 + 11.56

Reorder the terms:
11.56 + -6.8x + x2 = 0.2 + 11.56

Combine like terms: 0.2 + 11.56 = 11.76
11.56 + -6.8x + x2 = 11.76

Factor a perfect square on the left side:
(x + -3.4)(x + -3.4) = 11.76

Calculate the square root of the right side: 3.42928564

Break this problem into two subproblems by setting 
(x + -3.4) equal to 3.42928564 and -3.42928564.

Subproblem 1

x + -3.4 = 3.42928564 Simplifying x + -3.4 = 3.42928564 Reorder the terms: -3.4 + x = 3.42928564 Solving -3.4 + x = 3.42928564 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.4' to each side of the equation. -3.4 + 3.4 + x = 3.42928564 + 3.4 Combine like terms: -3.4 + 3.4 = 0.0 0.0 + x = 3.42928564 + 3.4 x = 3.42928564 + 3.4 Combine like terms: 3.42928564 + 3.4 = 6.82928564 x = 6.82928564 Simplifying x = 6.82928564

Subproblem 2

x + -3.4 = -3.42928564 Simplifying x + -3.4 = -3.42928564 Reorder the terms: -3.4 + x = -3.42928564 Solving -3.4 + x = -3.42928564 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.4' to each side of the equation. -3.4 + 3.4 + x = -3.42928564 + 3.4 Combine like terms: -3.4 + 3.4 = 0.0 0.0 + x = -3.42928564 + 3.4 x = -3.42928564 + 3.4 Combine like terms: -3.42928564 + 3.4 = -0.02928564 x = -0.02928564 Simplifying x = -0.02928564

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.82928564, -0.02928564}

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