x^2-9x-344=0

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Solution for x^2-9x-344=0 equation:


Simplifying
x2 + -9x + -344 = 0

Reorder the terms:
-344 + -9x + x2 = 0

Solving
-344 + -9x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '344' to each side of the equation.
-344 + -9x + 344 + x2 = 0 + 344

Reorder the terms:
-344 + 344 + -9x + x2 = 0 + 344

Combine like terms: -344 + 344 = 0
0 + -9x + x2 = 0 + 344
-9x + x2 = 0 + 344

Combine like terms: 0 + 344 = 344
-9x + x2 = 344

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 = 344 + 20.25

Reorder the terms:
20.25 + -9x + x2 = 344 + 20.25

Combine like terms: 344 + 20.25 = 364.25
20.25 + -9x + x2 = 364.25

Factor a perfect square on the left side:
(x + -4.5)(x + -4.5) = 364.25

Calculate the square root of the right side: 19.085334684

Break this problem into two subproblems by setting 
(x + -4.5) equal to 19.085334684 and -19.085334684.

Subproblem 1

x + -4.5 = 19.085334684 Simplifying x + -4.5 = 19.085334684 Reorder the terms: -4.5 + x = 19.085334684 Solving -4.5 + x = 19.085334684 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 = 19.085334684 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + x = 19.085334684 + 4.5 x = 19.085334684 + 4.5 Combine like terms: 19.085334684 + 4.5 = 23.585334684 x = 23.585334684 Simplifying x = 23.585334684

Subproblem 2

x + -4.5 = -19.085334684 Simplifying x + -4.5 = -19.085334684 Reorder the terms: -4.5 + x = -19.085334684 Solving -4.5 + x = -19.085334684 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 = -19.085334684 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + x = -19.085334684 + 4.5 x = -19.085334684 + 4.5 Combine like terms: -19.085334684 + 4.5 = -14.585334684 x = -14.585334684 Simplifying x = -14.585334684

Solution

The solution to the problem is based on the solutions from the subproblems. x = {23.585334684, -14.585334684}

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