13x^2-24x-288=0

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Solution for 13x^2-24x-288=0 equation:


Simplifying
13x2 + -24x + -288 = 0

Reorder the terms:
-288 + -24x + 13x2 = 0

Solving
-288 + -24x + 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'.
-22.15384615 + -1.846153846x + x2 = 0

Move the constant term to the right:

Add '22.15384615' to each side of the equation.
-22.15384615 + -1.846153846x + 22.15384615 + x2 = 0 + 22.15384615

Reorder the terms:
-22.15384615 + 22.15384615 + -1.846153846x + x2 = 0 + 22.15384615

Combine like terms: -22.15384615 + 22.15384615 = 0.00000000
0.00000000 + -1.846153846x + x2 = 0 + 22.15384615
-1.846153846x + x2 = 0 + 22.15384615

Combine like terms: 0 + 22.15384615 = 22.15384615
-1.846153846x + x2 = 22.15384615

The x term is -1.846153846x.  Take half its coefficient (-0.923076923).
Square it (0.8520710058) and add it to both sides.

Add '0.8520710058' to each side of the equation.
-1.846153846x + 0.8520710058 + x2 = 22.15384615 + 0.8520710058

Reorder the terms:
0.8520710058 + -1.846153846x + x2 = 22.15384615 + 0.8520710058

Combine like terms: 22.15384615 + 0.8520710058 = 23.0059171558
0.8520710058 + -1.846153846x + x2 = 23.0059171558

Factor a perfect square on the left side:
(x + -0.923076923)(x + -0.923076923) = 23.0059171558

Calculate the square root of the right side: 4.79644839

Break this problem into two subproblems by setting 
(x + -0.923076923) equal to 4.79644839 and -4.79644839.

Subproblem 1

x + -0.923076923 = 4.79644839 Simplifying x + -0.923076923 = 4.79644839 Reorder the terms: -0.923076923 + x = 4.79644839 Solving -0.923076923 + x = 4.79644839 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.923076923' to each side of the equation. -0.923076923 + 0.923076923 + x = 4.79644839 + 0.923076923 Combine like terms: -0.923076923 + 0.923076923 = 0.000000000 0.000000000 + x = 4.79644839 + 0.923076923 x = 4.79644839 + 0.923076923 Combine like terms: 4.79644839 + 0.923076923 = 5.719525313 x = 5.719525313 Simplifying x = 5.719525313

Subproblem 2

x + -0.923076923 = -4.79644839 Simplifying x + -0.923076923 = -4.79644839 Reorder the terms: -0.923076923 + x = -4.79644839 Solving -0.923076923 + x = -4.79644839 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.923076923' to each side of the equation. -0.923076923 + 0.923076923 + x = -4.79644839 + 0.923076923 Combine like terms: -0.923076923 + 0.923076923 = 0.000000000 0.000000000 + x = -4.79644839 + 0.923076923 x = -4.79644839 + 0.923076923 Combine like terms: -4.79644839 + 0.923076923 = -3.873371467 x = -3.873371467 Simplifying x = -3.873371467

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.719525313, -3.873371467}

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