14x^2-15x-25=0

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Solution for 14x^2-15x-25=0 equation:


Simplifying
14x2 + -15x + -25 = 0

Reorder the terms:
-25 + -15x + 14x2 = 0

Solving
-25 + -15x + 14x2 = 0

Solving for variable 'x'.

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

Divide each side by '14'.
-1.785714286 + -1.071428571x + x2 = 0

Move the constant term to the right:

Add '1.785714286' to each side of the equation.
-1.785714286 + -1.071428571x + 1.785714286 + x2 = 0 + 1.785714286

Reorder the terms:
-1.785714286 + 1.785714286 + -1.071428571x + x2 = 0 + 1.785714286

Combine like terms: -1.785714286 + 1.785714286 = 0.000000000
0.000000000 + -1.071428571x + x2 = 0 + 1.785714286
-1.071428571x + x2 = 0 + 1.785714286

Combine like terms: 0 + 1.785714286 = 1.785714286
-1.071428571x + x2 = 1.785714286

The x term is -1.071428571x.  Take half its coefficient (-0.5357142855).
Square it (0.2869897957) and add it to both sides.

Add '0.2869897957' to each side of the equation.
-1.071428571x + 0.2869897957 + x2 = 1.785714286 + 0.2869897957

Reorder the terms:
0.2869897957 + -1.071428571x + x2 = 1.785714286 + 0.2869897957

Combine like terms: 1.785714286 + 0.2869897957 = 2.0727040817
0.2869897957 + -1.071428571x + x2 = 2.0727040817

Factor a perfect square on the left side:
(x + -0.5357142855)(x + -0.5357142855) = 2.0727040817

Calculate the square root of the right side: 1.439688884

Break this problem into two subproblems by setting 
(x + -0.5357142855) equal to 1.439688884 and -1.439688884.

Subproblem 1

x + -0.5357142855 = 1.439688884 Simplifying x + -0.5357142855 = 1.439688884 Reorder the terms: -0.5357142855 + x = 1.439688884 Solving -0.5357142855 + x = 1.439688884 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5357142855' to each side of the equation. -0.5357142855 + 0.5357142855 + x = 1.439688884 + 0.5357142855 Combine like terms: -0.5357142855 + 0.5357142855 = 0.0000000000 0.0000000000 + x = 1.439688884 + 0.5357142855 x = 1.439688884 + 0.5357142855 Combine like terms: 1.439688884 + 0.5357142855 = 1.9754031695 x = 1.9754031695 Simplifying x = 1.9754031695

Subproblem 2

x + -0.5357142855 = -1.439688884 Simplifying x + -0.5357142855 = -1.439688884 Reorder the terms: -0.5357142855 + x = -1.439688884 Solving -0.5357142855 + x = -1.439688884 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5357142855' to each side of the equation. -0.5357142855 + 0.5357142855 + x = -1.439688884 + 0.5357142855 Combine like terms: -0.5357142855 + 0.5357142855 = 0.0000000000 0.0000000000 + x = -1.439688884 + 0.5357142855 x = -1.439688884 + 0.5357142855 Combine like terms: -1.439688884 + 0.5357142855 = -0.9039745985 x = -0.9039745985 Simplifying x = -0.9039745985

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.9754031695, -0.9039745985}

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