x^2+200x+100=0

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Solution for x^2+200x+100=0 equation:


Simplifying
x2 + 200x + 100 = 0

Reorder the terms:
100 + 200x + x2 = 0

Solving
100 + 200x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-100' to each side of the equation.
100 + 200x + -100 + x2 = 0 + -100

Reorder the terms:
100 + -100 + 200x + x2 = 0 + -100

Combine like terms: 100 + -100 = 0
0 + 200x + x2 = 0 + -100
200x + x2 = 0 + -100

Combine like terms: 0 + -100 = -100
200x + x2 = -100

The x term is 200x.  Take half its coefficient (100).
Square it (10000) and add it to both sides.

Add '10000' to each side of the equation.
200x + 10000 + x2 = -100 + 10000

Reorder the terms:
10000 + 200x + x2 = -100 + 10000

Combine like terms: -100 + 10000 = 9900
10000 + 200x + x2 = 9900

Factor a perfect square on the left side:
(x + 100)(x + 100) = 9900

Calculate the square root of the right side: 99.498743711

Break this problem into two subproblems by setting 
(x + 100) equal to 99.498743711 and -99.498743711.

Subproblem 1

x + 100 = 99.498743711 Simplifying x + 100 = 99.498743711 Reorder the terms: 100 + x = 99.498743711 Solving 100 + x = 99.498743711 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-100' to each side of the equation. 100 + -100 + x = 99.498743711 + -100 Combine like terms: 100 + -100 = 0 0 + x = 99.498743711 + -100 x = 99.498743711 + -100 Combine like terms: 99.498743711 + -100 = -0.501256289 x = -0.501256289 Simplifying x = -0.501256289

Subproblem 2

x + 100 = -99.498743711 Simplifying x + 100 = -99.498743711 Reorder the terms: 100 + x = -99.498743711 Solving 100 + x = -99.498743711 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-100' to each side of the equation. 100 + -100 + x = -99.498743711 + -100 Combine like terms: 100 + -100 = 0 0 + x = -99.498743711 + -100 x = -99.498743711 + -100 Combine like terms: -99.498743711 + -100 = -199.498743711 x = -199.498743711 Simplifying x = -199.498743711

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.501256289, -199.498743711}

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