11m^2-11m-1=9m^2

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Solution for 11m^2-11m-1=9m^2 equation:


Simplifying
11m2 + -11m + -1 = 9m2

Reorder the terms:
-1 + -11m + 11m2 = 9m2

Solving
-1 + -11m + 11m2 = 9m2

Solving for variable 'm'.

Combine like terms: 11m2 + -9m2 = 2m2
-1 + -11m + 2m2 = 9m2 + -9m2

Combine like terms: 9m2 + -9m2 = 0
-1 + -11m + 2m2 = 0

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

Divide each side by '2'.
-0.5 + -5.5m + m2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + -5.5m + 0.5 + m2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + -5.5m + m2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + -5.5m + m2 = 0 + 0.5
-5.5m + m2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
-5.5m + m2 = 0.5

The m term is -5.5m.  Take half its coefficient (-2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
-5.5m + 7.5625 + m2 = 0.5 + 7.5625

Reorder the terms:
7.5625 + -5.5m + m2 = 0.5 + 7.5625

Combine like terms: 0.5 + 7.5625 = 8.0625
7.5625 + -5.5m + m2 = 8.0625

Factor a perfect square on the left side:
(m + -2.75)(m + -2.75) = 8.0625

Calculate the square root of the right side: 2.839454173

Break this problem into two subproblems by setting 
(m + -2.75) equal to 2.839454173 and -2.839454173.

Subproblem 1

m + -2.75 = 2.839454173 Simplifying m + -2.75 = 2.839454173 Reorder the terms: -2.75 + m = 2.839454173 Solving -2.75 + m = 2.839454173 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + m = 2.839454173 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + m = 2.839454173 + 2.75 m = 2.839454173 + 2.75 Combine like terms: 2.839454173 + 2.75 = 5.589454173 m = 5.589454173 Simplifying m = 5.589454173

Subproblem 2

m + -2.75 = -2.839454173 Simplifying m + -2.75 = -2.839454173 Reorder the terms: -2.75 + m = -2.839454173 Solving -2.75 + m = -2.839454173 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + m = -2.839454173 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + m = -2.839454173 + 2.75 m = -2.839454173 + 2.75 Combine like terms: -2.839454173 + 2.75 = -0.089454173 m = -0.089454173 Simplifying m = -0.089454173

Solution

The solution to the problem is based on the solutions from the subproblems. m = {5.589454173, -0.089454173}

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