25x^2+686x-2183=0

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Solution for 25x^2+686x-2183=0 equation:


Simplifying
25x2 + 686x + -2183 = 0

Reorder the terms:
-2183 + 686x + 25x2 = 0

Solving
-2183 + 686x + 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'.
-87.32 + 27.44x + x2 = 0

Move the constant term to the right:

Add '87.32' to each side of the equation.
-87.32 + 27.44x + 87.32 + x2 = 0 + 87.32

Reorder the terms:
-87.32 + 87.32 + 27.44x + x2 = 0 + 87.32

Combine like terms: -87.32 + 87.32 = 0.00
0.00 + 27.44x + x2 = 0 + 87.32
27.44x + x2 = 0 + 87.32

Combine like terms: 0 + 87.32 = 87.32
27.44x + x2 = 87.32

The x term is 27.44x.  Take half its coefficient (13.72).
Square it (188.2384) and add it to both sides.

Add '188.2384' to each side of the equation.
27.44x + 188.2384 + x2 = 87.32 + 188.2384

Reorder the terms:
188.2384 + 27.44x + x2 = 87.32 + 188.2384

Combine like terms: 87.32 + 188.2384 = 275.5584
188.2384 + 27.44x + x2 = 275.5584

Factor a perfect square on the left side:
(x + 13.72)(x + 13.72) = 275.5584

Calculate the square root of the right side: 16.599951807

Break this problem into two subproblems by setting 
(x + 13.72) equal to 16.599951807 and -16.599951807.

Subproblem 1

x + 13.72 = 16.599951807 Simplifying x + 13.72 = 16.599951807 Reorder the terms: 13.72 + x = 16.599951807 Solving 13.72 + x = 16.599951807 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13.72' to each side of the equation. 13.72 + -13.72 + x = 16.599951807 + -13.72 Combine like terms: 13.72 + -13.72 = 0.00 0.00 + x = 16.599951807 + -13.72 x = 16.599951807 + -13.72 Combine like terms: 16.599951807 + -13.72 = 2.879951807 x = 2.879951807 Simplifying x = 2.879951807

Subproblem 2

x + 13.72 = -16.599951807 Simplifying x + 13.72 = -16.599951807 Reorder the terms: 13.72 + x = -16.599951807 Solving 13.72 + x = -16.599951807 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13.72' to each side of the equation. 13.72 + -13.72 + x = -16.599951807 + -13.72 Combine like terms: 13.72 + -13.72 = 0.00 0.00 + x = -16.599951807 + -13.72 x = -16.599951807 + -13.72 Combine like terms: -16.599951807 + -13.72 = -30.319951807 x = -30.319951807 Simplifying x = -30.319951807

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.879951807, -30.319951807}

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