x^2+10x-4000=0

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Solution for x^2+10x-4000=0 equation:


Simplifying
x2 + 10x + -4000 = 0

Reorder the terms:
-4000 + 10x + x2 = 0

Solving
-4000 + 10x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '4000' to each side of the equation.
-4000 + 10x + 4000 + x2 = 0 + 4000

Reorder the terms:
-4000 + 4000 + 10x + x2 = 0 + 4000

Combine like terms: -4000 + 4000 = 0
0 + 10x + x2 = 0 + 4000
10x + x2 = 0 + 4000

Combine like terms: 0 + 4000 = 4000
10x + x2 = 4000

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 4000 + 25

Reorder the terms:
25 + 10x + x2 = 4000 + 25

Combine like terms: 4000 + 25 = 4025
25 + 10x + x2 = 4025

Factor a perfect square on the left side:
(x + 5)(x + 5) = 4025

Calculate the square root of the right side: 63.442887702

Break this problem into two subproblems by setting 
(x + 5) equal to 63.442887702 and -63.442887702.

Subproblem 1

x + 5 = 63.442887702 Simplifying x + 5 = 63.442887702 Reorder the terms: 5 + x = 63.442887702 Solving 5 + x = 63.442887702 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 63.442887702 + -5 Combine like terms: 5 + -5 = 0 0 + x = 63.442887702 + -5 x = 63.442887702 + -5 Combine like terms: 63.442887702 + -5 = 58.442887702 x = 58.442887702 Simplifying x = 58.442887702

Subproblem 2

x + 5 = -63.442887702 Simplifying x + 5 = -63.442887702 Reorder the terms: 5 + x = -63.442887702 Solving 5 + x = -63.442887702 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -63.442887702 + -5 Combine like terms: 5 + -5 = 0 0 + x = -63.442887702 + -5 x = -63.442887702 + -5 Combine like terms: -63.442887702 + -5 = -68.442887702 x = -68.442887702 Simplifying x = -68.442887702

Solution

The solution to the problem is based on the solutions from the subproblems. x = {58.442887702, -68.442887702}

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