x(x+1)=14000

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Solution for x(x+1)=14000 equation:


Simplifying
x(x + 1) = 14000

Reorder the terms:
x(1 + x) = 14000
(1 * x + x * x) = 14000
(1x + x2) = 14000

Solving
1x + x2 = 14000

Solving for variable 'x'.

Reorder the terms:
-14000 + 1x + x2 = 14000 + -14000

Combine like terms: 14000 + -14000 = 0
-14000 + 1x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '14000' to each side of the equation.
-14000 + 1x + 14000 + x2 = 0 + 14000

Reorder the terms:
-14000 + 14000 + 1x + x2 = 0 + 14000

Combine like terms: -14000 + 14000 = 0
0 + 1x + x2 = 0 + 14000
1x + x2 = 0 + 14000

Combine like terms: 0 + 14000 = 14000
1x + x2 = 14000

The x term is 1x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
x + 0.25 + x2 = 14000 + 0.25

Reorder the terms:
0.25 + x + x2 = 14000 + 0.25

Combine like terms: 14000 + 0.25 = 14000.25
0.25 + x + x2 = 14000.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 14000.25

Calculate the square root of the right side: 118.3226521

Break this problem into two subproblems by setting 
(x + 0.5) equal to 118.3226521 and -118.3226521.

Subproblem 1

x + 0.5 = 118.3226521 Simplifying x + 0.5 = 118.3226521 Reorder the terms: 0.5 + x = 118.3226521 Solving 0.5 + x = 118.3226521 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 118.3226521 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 118.3226521 + -0.5 x = 118.3226521 + -0.5 Combine like terms: 118.3226521 + -0.5 = 117.8226521 x = 117.8226521 Simplifying x = 117.8226521

Subproblem 2

x + 0.5 = -118.3226521 Simplifying x + 0.5 = -118.3226521 Reorder the terms: 0.5 + x = -118.3226521 Solving 0.5 + x = -118.3226521 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -118.3226521 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -118.3226521 + -0.5 x = -118.3226521 + -0.5 Combine like terms: -118.3226521 + -0.5 = -118.8226521 x = -118.8226521 Simplifying x = -118.8226521

Solution

The solution to the problem is based on the solutions from the subproblems. x = {117.8226521, -118.8226521}

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