25x^2-34x-343=0

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Solution for 25x^2-34x-343=0 equation:


Simplifying
25x2 + -34x + -343 = 0

Reorder the terms:
-343 + -34x + 25x2 = 0

Solving
-343 + -34x + 25x2 = 0

Solving for variable 'x'.

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

Divide each side by '25'.
-13.72 + -1.36x + x2 = 0

Move the constant term to the right:

Add '13.72' to each side of the equation.
-13.72 + -1.36x + 13.72 + x2 = 0 + 13.72

Reorder the terms:
-13.72 + 13.72 + -1.36x + x2 = 0 + 13.72

Combine like terms: -13.72 + 13.72 = 0.00
0.00 + -1.36x + x2 = 0 + 13.72
-1.36x + x2 = 0 + 13.72

Combine like terms: 0 + 13.72 = 13.72
-1.36x + x2 = 13.72

The x term is -1.36x.  Take half its coefficient (-0.68).
Square it (0.4624) and add it to both sides.

Add '0.4624' to each side of the equation.
-1.36x + 0.4624 + x2 = 13.72 + 0.4624

Reorder the terms:
0.4624 + -1.36x + x2 = 13.72 + 0.4624

Combine like terms: 13.72 + 0.4624 = 14.1824
0.4624 + -1.36x + x2 = 14.1824

Factor a perfect square on the left side:
(x + -0.68)(x + -0.68) = 14.1824

Calculate the square root of the right side: 3.765952735

Break this problem into two subproblems by setting 
(x + -0.68) equal to 3.765952735 and -3.765952735.

Subproblem 1

x + -0.68 = 3.765952735 Simplifying x + -0.68 = 3.765952735 Reorder the terms: -0.68 + x = 3.765952735 Solving -0.68 + x = 3.765952735 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.68' to each side of the equation. -0.68 + 0.68 + x = 3.765952735 + 0.68 Combine like terms: -0.68 + 0.68 = 0.00 0.00 + x = 3.765952735 + 0.68 x = 3.765952735 + 0.68 Combine like terms: 3.765952735 + 0.68 = 4.445952735 x = 4.445952735 Simplifying x = 4.445952735

Subproblem 2

x + -0.68 = -3.765952735 Simplifying x + -0.68 = -3.765952735 Reorder the terms: -0.68 + x = -3.765952735 Solving -0.68 + x = -3.765952735 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.68' to each side of the equation. -0.68 + 0.68 + x = -3.765952735 + 0.68 Combine like terms: -0.68 + 0.68 = 0.00 0.00 + x = -3.765952735 + 0.68 x = -3.765952735 + 0.68 Combine like terms: -3.765952735 + 0.68 = -3.085952735 x = -3.085952735 Simplifying x = -3.085952735

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.445952735, -3.085952735}

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