x^2-5x=6999

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Solution for x^2-5x=6999 equation:


Simplifying
x2 + -5x = 6999

Reorder the terms:
-5x + x2 = 6999

Solving
-5x + x2 = 6999

Solving for variable 'x'.

Reorder the terms:
-6999 + -5x + x2 = 6999 + -6999

Combine like terms: 6999 + -6999 = 0
-6999 + -5x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '6999' to each side of the equation.
-6999 + -5x + 6999 + x2 = 0 + 6999

Reorder the terms:
-6999 + 6999 + -5x + x2 = 0 + 6999

Combine like terms: -6999 + 6999 = 0
0 + -5x + x2 = 0 + 6999
-5x + x2 = 0 + 6999

Combine like terms: 0 + 6999 = 6999
-5x + x2 = 6999

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = 6999 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 6999 + 6.25

Combine like terms: 6999 + 6.25 = 7005.25
6.25 + -5x + x2 = 7005.25

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 7005.25

Calculate the square root of the right side: 83.697371524

Break this problem into two subproblems by setting 
(x + -2.5) equal to 83.697371524 and -83.697371524.

Subproblem 1

x + -2.5 = 83.697371524 Simplifying x + -2.5 = 83.697371524 Reorder the terms: -2.5 + x = 83.697371524 Solving -2.5 + x = 83.697371524 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 83.697371524 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 83.697371524 + 2.5 x = 83.697371524 + 2.5 Combine like terms: 83.697371524 + 2.5 = 86.197371524 x = 86.197371524 Simplifying x = 86.197371524

Subproblem 2

x + -2.5 = -83.697371524 Simplifying x + -2.5 = -83.697371524 Reorder the terms: -2.5 + x = -83.697371524 Solving -2.5 + x = -83.697371524 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -83.697371524 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -83.697371524 + 2.5 x = -83.697371524 + 2.5 Combine like terms: -83.697371524 + 2.5 = -81.197371524 x = -81.197371524 Simplifying x = -81.197371524

Solution

The solution to the problem is based on the solutions from the subproblems. x = {86.197371524, -81.197371524}

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