13x^2-241x-432=0

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Solution for 13x^2-241x-432=0 equation:


Simplifying
13x2 + -241x + -432 = 0

Reorder the terms:
-432 + -241x + 13x2 = 0

Solving
-432 + -241x + 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'.
-33.23076923 + -18.53846154x + x2 = 0

Move the constant term to the right:

Add '33.23076923' to each side of the equation.
-33.23076923 + -18.53846154x + 33.23076923 + x2 = 0 + 33.23076923

Reorder the terms:
-33.23076923 + 33.23076923 + -18.53846154x + x2 = 0 + 33.23076923

Combine like terms: -33.23076923 + 33.23076923 = 0.00000000
0.00000000 + -18.53846154x + x2 = 0 + 33.23076923
-18.53846154x + x2 = 0 + 33.23076923

Combine like terms: 0 + 33.23076923 = 33.23076923
-18.53846154x + x2 = 33.23076923

The x term is -18.53846154x.  Take half its coefficient (-9.26923077).
Square it (85.91863907) and add it to both sides.

Add '85.91863907' to each side of the equation.
-18.53846154x + 85.91863907 + x2 = 33.23076923 + 85.91863907

Reorder the terms:
85.91863907 + -18.53846154x + x2 = 33.23076923 + 85.91863907

Combine like terms: 33.23076923 + 85.91863907 = 119.1494083
85.91863907 + -18.53846154x + x2 = 119.1494083

Factor a perfect square on the left side:
(x + -9.26923077)(x + -9.26923077) = 119.1494083

Calculate the square root of the right side: 10.915558085

Break this problem into two subproblems by setting 
(x + -9.26923077) equal to 10.915558085 and -10.915558085.

Subproblem 1

x + -9.26923077 = 10.915558085 Simplifying x + -9.26923077 = 10.915558085 Reorder the terms: -9.26923077 + x = 10.915558085 Solving -9.26923077 + x = 10.915558085 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.26923077' to each side of the equation. -9.26923077 + 9.26923077 + x = 10.915558085 + 9.26923077 Combine like terms: -9.26923077 + 9.26923077 = 0.00000000 0.00000000 + x = 10.915558085 + 9.26923077 x = 10.915558085 + 9.26923077 Combine like terms: 10.915558085 + 9.26923077 = 20.184788855 x = 20.184788855 Simplifying x = 20.184788855

Subproblem 2

x + -9.26923077 = -10.915558085 Simplifying x + -9.26923077 = -10.915558085 Reorder the terms: -9.26923077 + x = -10.915558085 Solving -9.26923077 + x = -10.915558085 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.26923077' to each side of the equation. -9.26923077 + 9.26923077 + x = -10.915558085 + 9.26923077 Combine like terms: -9.26923077 + 9.26923077 = 0.00000000 0.00000000 + x = -10.915558085 + 9.26923077 x = -10.915558085 + 9.26923077 Combine like terms: -10.915558085 + 9.26923077 = -1.646327315 x = -1.646327315 Simplifying x = -1.646327315

Solution

The solution to the problem is based on the solutions from the subproblems. x = {20.184788855, -1.646327315}

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