6m^2+66m+121=0

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Solution for 6m^2+66m+121=0 equation:


Simplifying
6m2 + 66m + 121 = 0

Reorder the terms:
121 + 66m + 6m2 = 0

Solving
121 + 66m + 6m2 = 0

Solving for variable 'm'.

Begin completing the square.  Divide all terms by
6 the coefficient of the squared term: 

Divide each side by '6'.
20.16666667 + 11m + m2 = 0

Move the constant term to the right:

Add '-20.16666667' to each side of the equation.
20.16666667 + 11m + -20.16666667 + m2 = 0 + -20.16666667

Reorder the terms:
20.16666667 + -20.16666667 + 11m + m2 = 0 + -20.16666667

Combine like terms: 20.16666667 + -20.16666667 = 0.00000000
0.00000000 + 11m + m2 = 0 + -20.16666667
11m + m2 = 0 + -20.16666667

Combine like terms: 0 + -20.16666667 = -20.16666667
11m + m2 = -20.16666667

The m term is 11m.  Take half its coefficient (5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
11m + 30.25 + m2 = -20.16666667 + 30.25

Reorder the terms:
30.25 + 11m + m2 = -20.16666667 + 30.25

Combine like terms: -20.16666667 + 30.25 = 10.08333333
30.25 + 11m + m2 = 10.08333333

Factor a perfect square on the left side:
(m + 5.5)(m + 5.5) = 10.08333333

Calculate the square root of the right side: 3.17542648

Break this problem into two subproblems by setting 
(m + 5.5) equal to 3.17542648 and -3.17542648.

Subproblem 1

m + 5.5 = 3.17542648 Simplifying m + 5.5 = 3.17542648 Reorder the terms: 5.5 + m = 3.17542648 Solving 5.5 + m = 3.17542648 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + m = 3.17542648 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + m = 3.17542648 + -5.5 m = 3.17542648 + -5.5 Combine like terms: 3.17542648 + -5.5 = -2.32457352 m = -2.32457352 Simplifying m = -2.32457352

Subproblem 2

m + 5.5 = -3.17542648 Simplifying m + 5.5 = -3.17542648 Reorder the terms: 5.5 + m = -3.17542648 Solving 5.5 + m = -3.17542648 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + m = -3.17542648 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + m = -3.17542648 + -5.5 m = -3.17542648 + -5.5 Combine like terms: -3.17542648 + -5.5 = -8.67542648 m = -8.67542648 Simplifying m = -8.67542648

Solution

The solution to the problem is based on the solutions from the subproblems. m = {-2.32457352, -8.67542648}

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