m^2-6m-121=0

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Solution for m^2-6m-121=0 equation:


Simplifying
m2 + -6m + -121 = 0

Reorder the terms:
-121 + -6m + m2 = 0

Solving
-121 + -6m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '121' to each side of the equation.
-121 + -6m + 121 + m2 = 0 + 121

Reorder the terms:
-121 + 121 + -6m + m2 = 0 + 121

Combine like terms: -121 + 121 = 0
0 + -6m + m2 = 0 + 121
-6m + m2 = 0 + 121

Combine like terms: 0 + 121 = 121
-6m + m2 = 121

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

Add '9' to each side of the equation.
-6m + 9 + m2 = 121 + 9

Reorder the terms:
9 + -6m + m2 = 121 + 9

Combine like terms: 121 + 9 = 130
9 + -6m + m2 = 130

Factor a perfect square on the left side:
(m + -3)(m + -3) = 130

Calculate the square root of the right side: 11.401754251

Break this problem into two subproblems by setting 
(m + -3) equal to 11.401754251 and -11.401754251.

Subproblem 1

m + -3 = 11.401754251 Simplifying m + -3 = 11.401754251 Reorder the terms: -3 + m = 11.401754251 Solving -3 + m = 11.401754251 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + m = 11.401754251 + 3 Combine like terms: -3 + 3 = 0 0 + m = 11.401754251 + 3 m = 11.401754251 + 3 Combine like terms: 11.401754251 + 3 = 14.401754251 m = 14.401754251 Simplifying m = 14.401754251

Subproblem 2

m + -3 = -11.401754251 Simplifying m + -3 = -11.401754251 Reorder the terms: -3 + m = -11.401754251 Solving -3 + m = -11.401754251 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + m = -11.401754251 + 3 Combine like terms: -3 + 3 = 0 0 + m = -11.401754251 + 3 m = -11.401754251 + 3 Combine like terms: -11.401754251 + 3 = -8.401754251 m = -8.401754251 Simplifying m = -8.401754251

Solution

The solution to the problem is based on the solutions from the subproblems. m = {14.401754251, -8.401754251}

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