39x^2-476x-2461=0

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Solution for 39x^2-476x-2461=0 equation:


Simplifying
39x2 + -476x + -2461 = 0

Reorder the terms:
-2461 + -476x + 39x2 = 0

Solving
-2461 + -476x + 39x2 = 0

Solving for variable 'x'.

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

Divide each side by '39'.
-63.1025641 + -12.20512821x + x2 = 0

Move the constant term to the right:

Add '63.1025641' to each side of the equation.
-63.1025641 + -12.20512821x + 63.1025641 + x2 = 0 + 63.1025641

Reorder the terms:
-63.1025641 + 63.1025641 + -12.20512821x + x2 = 0 + 63.1025641

Combine like terms: -63.1025641 + 63.1025641 = 0.0000000
0.0000000 + -12.20512821x + x2 = 0 + 63.1025641
-12.20512821x + x2 = 0 + 63.1025641

Combine like terms: 0 + 63.1025641 = 63.1025641
-12.20512821x + x2 = 63.1025641

The x term is -12.20512821x.  Take half its coefficient (-6.102564105).
Square it (37.24128866) and add it to both sides.

Add '37.24128866' to each side of the equation.
-12.20512821x + 37.24128866 + x2 = 63.1025641 + 37.24128866

Reorder the terms:
37.24128866 + -12.20512821x + x2 = 63.1025641 + 37.24128866

Combine like terms: 63.1025641 + 37.24128866 = 100.34385276
37.24128866 + -12.20512821x + x2 = 100.34385276

Factor a perfect square on the left side:
(x + -6.102564105)(x + -6.102564105) = 100.34385276

Calculate the square root of the right side: 10.017177884

Break this problem into two subproblems by setting 
(x + -6.102564105) equal to 10.017177884 and -10.017177884.

Subproblem 1

x + -6.102564105 = 10.017177884 Simplifying x + -6.102564105 = 10.017177884 Reorder the terms: -6.102564105 + x = 10.017177884 Solving -6.102564105 + x = 10.017177884 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.102564105' to each side of the equation. -6.102564105 + 6.102564105 + x = 10.017177884 + 6.102564105 Combine like terms: -6.102564105 + 6.102564105 = 0.000000000 0.000000000 + x = 10.017177884 + 6.102564105 x = 10.017177884 + 6.102564105 Combine like terms: 10.017177884 + 6.102564105 = 16.119741989 x = 16.119741989 Simplifying x = 16.119741989

Subproblem 2

x + -6.102564105 = -10.017177884 Simplifying x + -6.102564105 = -10.017177884 Reorder the terms: -6.102564105 + x = -10.017177884 Solving -6.102564105 + x = -10.017177884 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.102564105' to each side of the equation. -6.102564105 + 6.102564105 + x = -10.017177884 + 6.102564105 Combine like terms: -6.102564105 + 6.102564105 = 0.000000000 0.000000000 + x = -10.017177884 + 6.102564105 x = -10.017177884 + 6.102564105 Combine like terms: -10.017177884 + 6.102564105 = -3.914613779 x = -3.914613779 Simplifying x = -3.914613779

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.119741989, -3.914613779}

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