91000=3408x^2+5437x+5449

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Solution for 91000=3408x^2+5437x+5449 equation:


Simplifying
91000 = 3408x2 + 5437x + 5449

Reorder the terms:
91000 = 5449 + 5437x + 3408x2

Solving
91000 = 5449 + 5437x + 3408x2

Solving for variable 'x'.

Combine like terms: 91000 + -5449 = 85551
85551 + -5437x + -3408x2 = 5449 + 5437x + 3408x2 + -5449 + -5437x + -3408x2

Reorder the terms:
85551 + -5437x + -3408x2 = 5449 + -5449 + 5437x + -5437x + 3408x2 + -3408x2

Combine like terms: 5449 + -5449 = 0
85551 + -5437x + -3408x2 = 0 + 5437x + -5437x + 3408x2 + -3408x2
85551 + -5437x + -3408x2 = 5437x + -5437x + 3408x2 + -3408x2

Combine like terms: 5437x + -5437x = 0
85551 + -5437x + -3408x2 = 0 + 3408x2 + -3408x2
85551 + -5437x + -3408x2 = 3408x2 + -3408x2

Combine like terms: 3408x2 + -3408x2 = 0
85551 + -5437x + -3408x2 = 0

Begin completing the square.  Divide all terms by
-3408 the coefficient of the squared term: 

Divide each side by '-3408'.
-25.10299296 + 1.59536385x + x2 = 0

Move the constant term to the right:

Add '25.10299296' to each side of the equation.
-25.10299296 + 1.59536385x + 25.10299296 + x2 = 0 + 25.10299296

Reorder the terms:
-25.10299296 + 25.10299296 + 1.59536385x + x2 = 0 + 25.10299296

Combine like terms: -25.10299296 + 25.10299296 = 0.00000000
0.00000000 + 1.59536385x + x2 = 0 + 25.10299296
1.59536385x + x2 = 0 + 25.10299296

Combine like terms: 0 + 25.10299296 = 25.10299296
1.59536385x + x2 = 25.10299296

The x term is 1.59536385x.  Take half its coefficient (0.797681925).
Square it (0.6362964535) and add it to both sides.

Add '0.6362964535' to each side of the equation.
1.59536385x + 0.6362964535 + x2 = 25.10299296 + 0.6362964535

Reorder the terms:
0.6362964535 + 1.59536385x + x2 = 25.10299296 + 0.6362964535

Combine like terms: 25.10299296 + 0.6362964535 = 25.7392894135
0.6362964535 + 1.59536385x + x2 = 25.7392894135

Factor a perfect square on the left side:
(x + 0.797681925)(x + 0.797681925) = 25.7392894135

Calculate the square root of the right side: 5.073390327

Break this problem into two subproblems by setting 
(x + 0.797681925) equal to 5.073390327 and -5.073390327.

Subproblem 1

x + 0.797681925 = 5.073390327 Simplifying x + 0.797681925 = 5.073390327 Reorder the terms: 0.797681925 + x = 5.073390327 Solving 0.797681925 + x = 5.073390327 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.797681925' to each side of the equation. 0.797681925 + -0.797681925 + x = 5.073390327 + -0.797681925 Combine like terms: 0.797681925 + -0.797681925 = 0.000000000 0.000000000 + x = 5.073390327 + -0.797681925 x = 5.073390327 + -0.797681925 Combine like terms: 5.073390327 + -0.797681925 = 4.275708402 x = 4.275708402 Simplifying x = 4.275708402

Subproblem 2

x + 0.797681925 = -5.073390327 Simplifying x + 0.797681925 = -5.073390327 Reorder the terms: 0.797681925 + x = -5.073390327 Solving 0.797681925 + x = -5.073390327 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.797681925' to each side of the equation. 0.797681925 + -0.797681925 + x = -5.073390327 + -0.797681925 Combine like terms: 0.797681925 + -0.797681925 = 0.000000000 0.000000000 + x = -5.073390327 + -0.797681925 x = -5.073390327 + -0.797681925 Combine like terms: -5.073390327 + -0.797681925 = -5.871072252 x = -5.871072252 Simplifying x = -5.871072252

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.275708402, -5.871072252}

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