6x^2-11x-30=384

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Solution for 6x^2-11x-30=384 equation:


Simplifying
6x2 + -11x + -30 = 384

Reorder the terms:
-30 + -11x + 6x2 = 384

Solving
-30 + -11x + 6x2 = 384

Solving for variable 'x'.

Reorder the terms:
-30 + -384 + -11x + 6x2 = 384 + -384

Combine like terms: -30 + -384 = -414
-414 + -11x + 6x2 = 384 + -384

Combine like terms: 384 + -384 = 0
-414 + -11x + 6x2 = 0

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

Divide each side by '6'.
-69 + -1.833333333x + x2 = 0

Move the constant term to the right:

Add '69' to each side of the equation.
-69 + -1.833333333x + 69 + x2 = 0 + 69

Reorder the terms:
-69 + 69 + -1.833333333x + x2 = 0 + 69

Combine like terms: -69 + 69 = 0
0 + -1.833333333x + x2 = 0 + 69
-1.833333333x + x2 = 0 + 69

Combine like terms: 0 + 69 = 69
-1.833333333x + x2 = 69

The x term is -1.833333333x.  Take half its coefficient (-0.9166666665).
Square it (0.8402777775) and add it to both sides.

Add '0.8402777775' to each side of the equation.
-1.833333333x + 0.8402777775 + x2 = 69 + 0.8402777775

Reorder the terms:
0.8402777775 + -1.833333333x + x2 = 69 + 0.8402777775

Combine like terms: 69 + 0.8402777775 = 69.8402777775
0.8402777775 + -1.833333333x + x2 = 69.8402777775

Factor a perfect square on the left side:
(x + -0.9166666665)(x + -0.9166666665) = 69.8402777775

Calculate the square root of the right side: 8.357049586

Break this problem into two subproblems by setting 
(x + -0.9166666665) equal to 8.357049586 and -8.357049586.

Subproblem 1

x + -0.9166666665 = 8.357049586 Simplifying x + -0.9166666665 = 8.357049586 Reorder the terms: -0.9166666665 + x = 8.357049586 Solving -0.9166666665 + x = 8.357049586 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9166666665' to each side of the equation. -0.9166666665 + 0.9166666665 + x = 8.357049586 + 0.9166666665 Combine like terms: -0.9166666665 + 0.9166666665 = 0.0000000000 0.0000000000 + x = 8.357049586 + 0.9166666665 x = 8.357049586 + 0.9166666665 Combine like terms: 8.357049586 + 0.9166666665 = 9.2737162525 x = 9.2737162525 Simplifying x = 9.2737162525

Subproblem 2

x + -0.9166666665 = -8.357049586 Simplifying x + -0.9166666665 = -8.357049586 Reorder the terms: -0.9166666665 + x = -8.357049586 Solving -0.9166666665 + x = -8.357049586 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9166666665' to each side of the equation. -0.9166666665 + 0.9166666665 + x = -8.357049586 + 0.9166666665 Combine like terms: -0.9166666665 + 0.9166666665 = 0.0000000000 0.0000000000 + x = -8.357049586 + 0.9166666665 x = -8.357049586 + 0.9166666665 Combine like terms: -8.357049586 + 0.9166666665 = -7.4403829195 x = -7.4403829195 Simplifying x = -7.4403829195

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.2737162525, -7.4403829195}

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