x^2+6x-308=0

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Solution for x^2+6x-308=0 equation:


Simplifying
x2 + 6x + -308 = 0

Reorder the terms:
-308 + 6x + x2 = 0

Solving
-308 + 6x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '308' to each side of the equation.
-308 + 6x + 308 + x2 = 0 + 308

Reorder the terms:
-308 + 308 + 6x + x2 = 0 + 308

Combine like terms: -308 + 308 = 0
0 + 6x + x2 = 0 + 308
6x + x2 = 0 + 308

Combine like terms: 0 + 308 = 308
6x + x2 = 308

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = 308 + 9

Reorder the terms:
9 + 6x + x2 = 308 + 9

Combine like terms: 308 + 9 = 317
9 + 6x + x2 = 317

Factor a perfect square on the left side:
(x + 3)(x + 3) = 317

Calculate the square root of the right side: 17.804493815

Break this problem into two subproblems by setting 
(x + 3) equal to 17.804493815 and -17.804493815.

Subproblem 1

x + 3 = 17.804493815 Simplifying x + 3 = 17.804493815 Reorder the terms: 3 + x = 17.804493815 Solving 3 + x = 17.804493815 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 17.804493815 + -3 Combine like terms: 3 + -3 = 0 0 + x = 17.804493815 + -3 x = 17.804493815 + -3 Combine like terms: 17.804493815 + -3 = 14.804493815 x = 14.804493815 Simplifying x = 14.804493815

Subproblem 2

x + 3 = -17.804493815 Simplifying x + 3 = -17.804493815 Reorder the terms: 3 + x = -17.804493815 Solving 3 + x = -17.804493815 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -17.804493815 + -3 Combine like terms: 3 + -3 = 0 0 + x = -17.804493815 + -3 x = -17.804493815 + -3 Combine like terms: -17.804493815 + -3 = -20.804493815 x = -20.804493815 Simplifying x = -20.804493815

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.804493815, -20.804493815}

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