x^2+100x-500=0

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Solution for x^2+100x-500=0 equation:


Simplifying
x2 + 100x + -500 = 0

Reorder the terms:
-500 + 100x + x2 = 0

Solving
-500 + 100x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '500' to each side of the equation.
-500 + 100x + 500 + x2 = 0 + 500

Reorder the terms:
-500 + 500 + 100x + x2 = 0 + 500

Combine like terms: -500 + 500 = 0
0 + 100x + x2 = 0 + 500
100x + x2 = 0 + 500

Combine like terms: 0 + 500 = 500
100x + x2 = 500

The x term is 100x.  Take half its coefficient (50).
Square it (2500) and add it to both sides.

Add '2500' to each side of the equation.
100x + 2500 + x2 = 500 + 2500

Reorder the terms:
2500 + 100x + x2 = 500 + 2500

Combine like terms: 500 + 2500 = 3000
2500 + 100x + x2 = 3000

Factor a perfect square on the left side:
(x + 50)(x + 50) = 3000

Calculate the square root of the right side: 54.772255751

Break this problem into two subproblems by setting 
(x + 50) equal to 54.772255751 and -54.772255751.

Subproblem 1

x + 50 = 54.772255751 Simplifying x + 50 = 54.772255751 Reorder the terms: 50 + x = 54.772255751 Solving 50 + x = 54.772255751 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-50' to each side of the equation. 50 + -50 + x = 54.772255751 + -50 Combine like terms: 50 + -50 = 0 0 + x = 54.772255751 + -50 x = 54.772255751 + -50 Combine like terms: 54.772255751 + -50 = 4.772255751 x = 4.772255751 Simplifying x = 4.772255751

Subproblem 2

x + 50 = -54.772255751 Simplifying x + 50 = -54.772255751 Reorder the terms: 50 + x = -54.772255751 Solving 50 + x = -54.772255751 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-50' to each side of the equation. 50 + -50 + x = -54.772255751 + -50 Combine like terms: 50 + -50 = 0 0 + x = -54.772255751 + -50 x = -54.772255751 + -50 Combine like terms: -54.772255751 + -50 = -104.772255751 x = -104.772255751 Simplifying x = -104.772255751

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.772255751, -104.772255751}

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