m^2-16m-11=0

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Solution for m^2-16m-11=0 equation:


Simplifying
m2 + -16m + -11 = 0

Reorder the terms:
-11 + -16m + m2 = 0

Solving
-11 + -16m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '11' to each side of the equation.
-11 + -16m + 11 + m2 = 0 + 11

Reorder the terms:
-11 + 11 + -16m + m2 = 0 + 11

Combine like terms: -11 + 11 = 0
0 + -16m + m2 = 0 + 11
-16m + m2 = 0 + 11

Combine like terms: 0 + 11 = 11
-16m + m2 = 11

The m term is -16m.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16m + 64 + m2 = 11 + 64

Reorder the terms:
64 + -16m + m2 = 11 + 64

Combine like terms: 11 + 64 = 75
64 + -16m + m2 = 75

Factor a perfect square on the left side:
(m + -8)(m + -8) = 75

Calculate the square root of the right side: 8.660254038

Break this problem into two subproblems by setting 
(m + -8) equal to 8.660254038 and -8.660254038.

Subproblem 1

m + -8 = 8.660254038 Simplifying m + -8 = 8.660254038 Reorder the terms: -8 + m = 8.660254038 Solving -8 + m = 8.660254038 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + m = 8.660254038 + 8 Combine like terms: -8 + 8 = 0 0 + m = 8.660254038 + 8 m = 8.660254038 + 8 Combine like terms: 8.660254038 + 8 = 16.660254038 m = 16.660254038 Simplifying m = 16.660254038

Subproblem 2

m + -8 = -8.660254038 Simplifying m + -8 = -8.660254038 Reorder the terms: -8 + m = -8.660254038 Solving -8 + m = -8.660254038 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + m = -8.660254038 + 8 Combine like terms: -8 + 8 = 0 0 + m = -8.660254038 + 8 m = -8.660254038 + 8 Combine like terms: -8.660254038 + 8 = -0.660254038 m = -0.660254038 Simplifying m = -0.660254038

Solution

The solution to the problem is based on the solutions from the subproblems. m = {16.660254038, -0.660254038}

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