x^2+4000x-4000000=0

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Solution for x^2+4000x-4000000=0 equation:


Simplifying
x2 + 4000x + -4000000 = 0

Reorder the terms:
-4000000 + 4000x + x2 = 0

Solving
-4000000 + 4000x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '4000000' to each side of the equation.
-4000000 + 4000x + 4000000 + x2 = 0 + 4000000

Reorder the terms:
-4000000 + 4000000 + 4000x + x2 = 0 + 4000000

Combine like terms: -4000000 + 4000000 = 0
0 + 4000x + x2 = 0 + 4000000
4000x + x2 = 0 + 4000000

Combine like terms: 0 + 4000000 = 4000000
4000x + x2 = 4000000

The x term is 4000x.  Take half its coefficient (2000).
Square it (4000000) and add it to both sides.

Add '4000000' to each side of the equation.
4000x + 4000000 + x2 = 4000000 + 4000000

Reorder the terms:
4000000 + 4000x + x2 = 4000000 + 4000000

Combine like terms: 4000000 + 4000000 = 8000000
4000000 + 4000x + x2 = 8000000

Factor a perfect square on the left side:
(x + 2000)(x + 2000) = 8000000

Calculate the square root of the right side: 2828.427124746

Break this problem into two subproblems by setting 
(x + 2000) equal to 2828.427124746 and -2828.427124746.

Subproblem 1

x + 2000 = 2828.427124746 Simplifying x + 2000 = 2828.427124746 Reorder the terms: 2000 + x = 2828.427124746 Solving 2000 + x = 2828.427124746 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2000' to each side of the equation. 2000 + -2000 + x = 2828.427124746 + -2000 Combine like terms: 2000 + -2000 = 0 0 + x = 2828.427124746 + -2000 x = 2828.427124746 + -2000 Combine like terms: 2828.427124746 + -2000 = 828.427124746 x = 828.427124746 Simplifying x = 828.427124746

Subproblem 2

x + 2000 = -2828.427124746 Simplifying x + 2000 = -2828.427124746 Reorder the terms: 2000 + x = -2828.427124746 Solving 2000 + x = -2828.427124746 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2000' to each side of the equation. 2000 + -2000 + x = -2828.427124746 + -2000 Combine like terms: 2000 + -2000 = 0 0 + x = -2828.427124746 + -2000 x = -2828.427124746 + -2000 Combine like terms: -2828.427124746 + -2000 = -4828.427124746 x = -4828.427124746 Simplifying x = -4828.427124746

Solution

The solution to the problem is based on the solutions from the subproblems. x = {828.427124746, -4828.427124746}

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