(x^2)-9x-2556=0

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Solution for (x^2)-9x-2556=0 equation:


Simplifying
(x2) + -9x + -2556 = 0
x2 + -9x + -2556 = 0

Reorder the terms:
-2556 + -9x + x2 = 0

Solving
-2556 + -9x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '2556' to each side of the equation.
-2556 + -9x + 2556 + x2 = 0 + 2556

Reorder the terms:
-2556 + 2556 + -9x + x2 = 0 + 2556

Combine like terms: -2556 + 2556 = 0
0 + -9x + x2 = 0 + 2556
-9x + x2 = 0 + 2556

Combine like terms: 0 + 2556 = 2556
-9x + x2 = 2556

The x term is -9x.  Take half its coefficient (-4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
-9x + 20.25 + x2 = 2556 + 20.25

Reorder the terms:
20.25 + -9x + x2 = 2556 + 20.25

Combine like terms: 2556 + 20.25 = 2576.25
20.25 + -9x + x2 = 2576.25

Factor a perfect square on the left side:
(x + -4.5)(x + -4.5) = 2576.25

Calculate the square root of the right side: 50.756772947

Break this problem into two subproblems by setting 
(x + -4.5) equal to 50.756772947 and -50.756772947.

Subproblem 1

x + -4.5 = 50.756772947 Simplifying x + -4.5 = 50.756772947 Reorder the terms: -4.5 + x = 50.756772947 Solving -4.5 + x = 50.756772947 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + x = 50.756772947 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + x = 50.756772947 + 4.5 x = 50.756772947 + 4.5 Combine like terms: 50.756772947 + 4.5 = 55.256772947 x = 55.256772947 Simplifying x = 55.256772947

Subproblem 2

x + -4.5 = -50.756772947 Simplifying x + -4.5 = -50.756772947 Reorder the terms: -4.5 + x = -50.756772947 Solving -4.5 + x = -50.756772947 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + x = -50.756772947 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + x = -50.756772947 + 4.5 x = -50.756772947 + 4.5 Combine like terms: -50.756772947 + 4.5 = -46.256772947 x = -46.256772947 Simplifying x = -46.256772947

Solution

The solution to the problem is based on the solutions from the subproblems. x = {55.256772947, -46.256772947}

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