x^2+10x-196=0

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Solution for x^2+10x-196=0 equation: 


Simplifying
x2 + 10x + -196 = 0

Reorder the terms:
-196 + 10x + x2 = 0

Solving
-196 + 10x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '196' to each side of the equation.
-196 + 10x + 196 + x2 = 0 + 196

Reorder the terms:
-196 + 196 + 10x + x2 = 0 + 196

Combine like terms: -196 + 196 = 0
0 + 10x + x2 = 0 + 196
10x + x2 = 0 + 196

Combine like terms: 0 + 196 = 196
10x + x2 = 196

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 = 196 + 25

Reorder the terms:
25 + 10x + x2 = 196 + 25

Combine like terms: 196 + 25 = 221
25 + 10x + x2 = 221

Factor a perfect square on the left side:
(x + 5)(x + 5) = 221

Calculate the square root of the right side: 14.866068747

Break this problem into two subproblems by setting 
(x + 5) equal to 14.866068747 and -14.866068747.


Subproblem 1
x + 5 = 14.866068747

Simplifying
x + 5 = 14.866068747

Reorder the terms:
5 + x = 14.866068747

Solving
5 + x = 14.866068747

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 = 14.866068747 + -5

Combine like terms: 5 + -5 = 0
0 + x = 14.866068747 + -5
x = 14.866068747 + -5

Combine like terms: 14.866068747 + -5 = 9.866068747
x = 9.866068747

Simplifying
x = 9.866068747


Subproblem 2
x + 5 = -14.866068747

Simplifying
x + 5 = -14.866068747

Reorder the terms:
5 + x = -14.866068747

Solving
5 + x = -14.866068747

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 = -14.866068747 + -5

Combine like terms: 5 + -5 = 0
0 + x = -14.866068747 + -5
x = -14.866068747 + -5

Combine like terms: -14.866068747 + -5 = -19.866068747
x = -19.866068747

Simplifying
x = -19.866068747


Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {9.866068747, -19.866068747}

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