x^2+12x-196=0

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Solution for x^2+12x-196=0 equation:


Simplifying
x2 + 12x + -196 = 0

Reorder the terms:
-196 + 12x + x2 = 0

Solving
-196 + 12x + 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 + 12x + 196 + x2 = 0 + 196

Reorder the terms:
-196 + 196 + 12x + x2 = 0 + 196

Combine like terms: -196 + 196 = 0
0 + 12x + x2 = 0 + 196
12x + x2 = 0 + 196

Combine like terms: 0 + 196 = 196
12x + x2 = 196

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = 196 + 36

Reorder the terms:
36 + 12x + x2 = 196 + 36

Combine like terms: 196 + 36 = 232
36 + 12x + x2 = 232

Factor a perfect square on the left side:
(x + 6)(x + 6) = 232

Calculate the square root of the right side: 15.231546212

Break this problem into two subproblems by setting 
(x + 6) equal to 15.231546212 and -15.231546212.

Subproblem 1

x + 6 = 15.231546212 Simplifying x + 6 = 15.231546212 Reorder the terms: 6 + x = 15.231546212 Solving 6 + x = 15.231546212 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 15.231546212 + -6 Combine like terms: 6 + -6 = 0 0 + x = 15.231546212 + -6 x = 15.231546212 + -6 Combine like terms: 15.231546212 + -6 = 9.231546212 x = 9.231546212 Simplifying x = 9.231546212

Subproblem 2

x + 6 = -15.231546212 Simplifying x + 6 = -15.231546212 Reorder the terms: 6 + x = -15.231546212 Solving 6 + x = -15.231546212 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -15.231546212 + -6 Combine like terms: 6 + -6 = 0 0 + x = -15.231546212 + -6 x = -15.231546212 + -6 Combine like terms: -15.231546212 + -6 = -21.231546212 x = -21.231546212 Simplifying x = -21.231546212

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.231546212, -21.231546212}

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