x^2+6x=195

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Solution for x^2+6x=195 equation:


Simplifying
x2 + 6x = 195

Reorder the terms:
6x + x2 = 195

Solving
6x + x2 = 195

Solving for variable 'x'.

Reorder the terms:
-195 + 6x + x2 = 195 + -195

Combine like terms: 195 + -195 = 0
-195 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '195' to each side of the equation.
-195 + 6x + 195 + x2 = 0 + 195

Reorder the terms:
-195 + 195 + 6x + x2 = 0 + 195

Combine like terms: -195 + 195 = 0
0 + 6x + x2 = 0 + 195
6x + x2 = 0 + 195

Combine like terms: 0 + 195 = 195
6x + x2 = 195

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 = 195 + 9

Reorder the terms:
9 + 6x + x2 = 195 + 9

Combine like terms: 195 + 9 = 204
9 + 6x + x2 = 204

Factor a perfect square on the left side:
(x + 3)(x + 3) = 204

Calculate the square root of the right side: 14.282856857

Break this problem into two subproblems by setting 
(x + 3) equal to 14.282856857 and -14.282856857.

Subproblem 1

x + 3 = 14.282856857 Simplifying x + 3 = 14.282856857 Reorder the terms: 3 + x = 14.282856857 Solving 3 + x = 14.282856857 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 = 14.282856857 + -3 Combine like terms: 3 + -3 = 0 0 + x = 14.282856857 + -3 x = 14.282856857 + -3 Combine like terms: 14.282856857 + -3 = 11.282856857 x = 11.282856857 Simplifying x = 11.282856857

Subproblem 2

x + 3 = -14.282856857 Simplifying x + 3 = -14.282856857 Reorder the terms: 3 + x = -14.282856857 Solving 3 + x = -14.282856857 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 = -14.282856857 + -3 Combine like terms: 3 + -3 = 0 0 + x = -14.282856857 + -3 x = -14.282856857 + -3 Combine like terms: -14.282856857 + -3 = -17.282856857 x = -17.282856857 Simplifying x = -17.282856857

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.282856857, -17.282856857}

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