13x^2-1x-188=0

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Solution for 13x^2-1x-188=0 equation:


Simplifying
13x2 + -1x + -188 = 0

Reorder the terms:
-188 + -1x + 13x2 = 0

Solving
-188 + -1x + 13x2 = 0

Solving for variable 'x'.

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

Divide each side by '13'.
-14.46153846 + -0.07692307692x + x2 = 0

Move the constant term to the right:

Add '14.46153846' to each side of the equation.
-14.46153846 + -0.07692307692x + 14.46153846 + x2 = 0 + 14.46153846

Reorder the terms:
-14.46153846 + 14.46153846 + -0.07692307692x + x2 = 0 + 14.46153846

Combine like terms: -14.46153846 + 14.46153846 = 0.00000000
0.00000000 + -0.07692307692x + x2 = 0 + 14.46153846
-0.07692307692x + x2 = 0 + 14.46153846

Combine like terms: 0 + 14.46153846 = 14.46153846
-0.07692307692x + x2 = 14.46153846

The x term is -0.07692307692x.  Take half its coefficient (-0.03846153846).
Square it (0.001479289941) and add it to both sides.

Add '0.001479289941' to each side of the equation.
-0.07692307692x + 0.001479289941 + x2 = 14.46153846 + 0.001479289941

Reorder the terms:
0.001479289941 + -0.07692307692x + x2 = 14.46153846 + 0.001479289941

Combine like terms: 14.46153846 + 0.001479289941 = 14.463017749941
0.001479289941 + -0.07692307692x + x2 = 14.463017749941

Factor a perfect square on the left side:
(x + -0.03846153846)(x + -0.03846153846) = 14.463017749941

Calculate the square root of the right side: 3.803027445

Break this problem into two subproblems by setting 
(x + -0.03846153846) equal to 3.803027445 and -3.803027445.

Subproblem 1

x + -0.03846153846 = 3.803027445 Simplifying x + -0.03846153846 = 3.803027445 Reorder the terms: -0.03846153846 + x = 3.803027445 Solving -0.03846153846 + x = 3.803027445 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.03846153846' to each side of the equation. -0.03846153846 + 0.03846153846 + x = 3.803027445 + 0.03846153846 Combine like terms: -0.03846153846 + 0.03846153846 = 0.00000000000 0.00000000000 + x = 3.803027445 + 0.03846153846 x = 3.803027445 + 0.03846153846 Combine like terms: 3.803027445 + 0.03846153846 = 3.84148898346 x = 3.84148898346 Simplifying x = 3.84148898346

Subproblem 2

x + -0.03846153846 = -3.803027445 Simplifying x + -0.03846153846 = -3.803027445 Reorder the terms: -0.03846153846 + x = -3.803027445 Solving -0.03846153846 + x = -3.803027445 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.03846153846' to each side of the equation. -0.03846153846 + 0.03846153846 + x = -3.803027445 + 0.03846153846 Combine like terms: -0.03846153846 + 0.03846153846 = 0.00000000000 0.00000000000 + x = -3.803027445 + 0.03846153846 x = -3.803027445 + 0.03846153846 Combine like terms: -3.803027445 + 0.03846153846 = -3.76456590654 x = -3.76456590654 Simplifying x = -3.76456590654

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.84148898346, -3.76456590654}

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