x^2+6x-172=0

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Solution for x^2+6x-172=0 equation:


Simplifying
x2 + 6x + -172 = 0

Reorder the terms:
-172 + 6x + x2 = 0

Solving
-172 + 6x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '172' to each side of the equation.
-172 + 6x + 172 + x2 = 0 + 172

Reorder the terms:
-172 + 172 + 6x + x2 = 0 + 172

Combine like terms: -172 + 172 = 0
0 + 6x + x2 = 0 + 172
6x + x2 = 0 + 172

Combine like terms: 0 + 172 = 172
6x + x2 = 172

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 = 172 + 9

Reorder the terms:
9 + 6x + x2 = 172 + 9

Combine like terms: 172 + 9 = 181
9 + 6x + x2 = 181

Factor a perfect square on the left side:
(x + 3)(x + 3) = 181

Calculate the square root of the right side: 13.453624047

Break this problem into two subproblems by setting 
(x + 3) equal to 13.453624047 and -13.453624047.

Subproblem 1

x + 3 = 13.453624047 Simplifying x + 3 = 13.453624047 Reorder the terms: 3 + x = 13.453624047 Solving 3 + x = 13.453624047 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 = 13.453624047 + -3 Combine like terms: 3 + -3 = 0 0 + x = 13.453624047 + -3 x = 13.453624047 + -3 Combine like terms: 13.453624047 + -3 = 10.453624047 x = 10.453624047 Simplifying x = 10.453624047

Subproblem 2

x + 3 = -13.453624047 Simplifying x + 3 = -13.453624047 Reorder the terms: 3 + x = -13.453624047 Solving 3 + x = -13.453624047 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 = -13.453624047 + -3 Combine like terms: 3 + -3 = 0 0 + x = -13.453624047 + -3 x = -13.453624047 + -3 Combine like terms: -13.453624047 + -3 = -16.453624047 x = -16.453624047 Simplifying x = -16.453624047

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.453624047, -16.453624047}

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