x^2+25x-20000=0

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Solution for x^2+25x-20000=0 equation:


Simplifying
x2 + 25x + -20000 = 0

Reorder the terms:
-20000 + 25x + x2 = 0

Solving
-20000 + 25x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '20000' to each side of the equation.
-20000 + 25x + 20000 + x2 = 0 + 20000

Reorder the terms:
-20000 + 20000 + 25x + x2 = 0 + 20000

Combine like terms: -20000 + 20000 = 0
0 + 25x + x2 = 0 + 20000
25x + x2 = 0 + 20000

Combine like terms: 0 + 20000 = 20000
25x + x2 = 20000

The x term is 25x.  Take half its coefficient (12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
25x + 156.25 + x2 = 20000 + 156.25

Reorder the terms:
156.25 + 25x + x2 = 20000 + 156.25

Combine like terms: 20000 + 156.25 = 20156.25
156.25 + 25x + x2 = 20156.25

Factor a perfect square on the left side:
(x + 12.5)(x + 12.5) = 20156.25

Calculate the square root of the right side: 141.972708645

Break this problem into two subproblems by setting 
(x + 12.5) equal to 141.972708645 and -141.972708645.

Subproblem 1

x + 12.5 = 141.972708645 Simplifying x + 12.5 = 141.972708645 Reorder the terms: 12.5 + x = 141.972708645 Solving 12.5 + x = 141.972708645 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = 141.972708645 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = 141.972708645 + -12.5 x = 141.972708645 + -12.5 Combine like terms: 141.972708645 + -12.5 = 129.472708645 x = 129.472708645 Simplifying x = 129.472708645

Subproblem 2

x + 12.5 = -141.972708645 Simplifying x + 12.5 = -141.972708645 Reorder the terms: 12.5 + x = -141.972708645 Solving 12.5 + x = -141.972708645 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = -141.972708645 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = -141.972708645 + -12.5 x = -141.972708645 + -12.5 Combine like terms: -141.972708645 + -12.5 = -154.472708645 x = -154.472708645 Simplifying x = -154.472708645

Solution

The solution to the problem is based on the solutions from the subproblems. x = {129.472708645, -154.472708645}

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