9m^2-7m=11

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Solution for 9m^2-7m=11 equation:


Simplifying
9m2 + -7m = 11

Reorder the terms:
-7m + 9m2 = 11

Solving
-7m + 9m2 = 11

Solving for variable 'm'.

Reorder the terms:
-11 + -7m + 9m2 = 11 + -11

Combine like terms: 11 + -11 = 0
-11 + -7m + 9m2 = 0

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

Divide each side by '9'.
-1.222222222 + -0.7777777778m + m2 = 0

Move the constant term to the right:

Add '1.222222222' to each side of the equation.
-1.222222222 + -0.7777777778m + 1.222222222 + m2 = 0 + 1.222222222

Reorder the terms:
-1.222222222 + 1.222222222 + -0.7777777778m + m2 = 0 + 1.222222222

Combine like terms: -1.222222222 + 1.222222222 = 0.000000000
0.000000000 + -0.7777777778m + m2 = 0 + 1.222222222
-0.7777777778m + m2 = 0 + 1.222222222

Combine like terms: 0 + 1.222222222 = 1.222222222
-0.7777777778m + m2 = 1.222222222

The m term is -0.7777777778m.  Take half its coefficient (-0.3888888889).
Square it (0.1512345679) and add it to both sides.

Add '0.1512345679' to each side of the equation.
-0.7777777778m + 0.1512345679 + m2 = 1.222222222 + 0.1512345679

Reorder the terms:
0.1512345679 + -0.7777777778m + m2 = 1.222222222 + 0.1512345679

Combine like terms: 1.222222222 + 0.1512345679 = 1.3734567899
0.1512345679 + -0.7777777778m + m2 = 1.3734567899

Factor a perfect square on the left side:
(m + -0.3888888889)(m + -0.3888888889) = 1.3734567899

Calculate the square root of the right side: 1.171945728

Break this problem into two subproblems by setting 
(m + -0.3888888889) equal to 1.171945728 and -1.171945728.

Subproblem 1

m + -0.3888888889 = 1.171945728 Simplifying m + -0.3888888889 = 1.171945728 Reorder the terms: -0.3888888889 + m = 1.171945728 Solving -0.3888888889 + m = 1.171945728 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.3888888889' to each side of the equation. -0.3888888889 + 0.3888888889 + m = 1.171945728 + 0.3888888889 Combine like terms: -0.3888888889 + 0.3888888889 = 0.0000000000 0.0000000000 + m = 1.171945728 + 0.3888888889 m = 1.171945728 + 0.3888888889 Combine like terms: 1.171945728 + 0.3888888889 = 1.5608346169 m = 1.5608346169 Simplifying m = 1.5608346169

Subproblem 2

m + -0.3888888889 = -1.171945728 Simplifying m + -0.3888888889 = -1.171945728 Reorder the terms: -0.3888888889 + m = -1.171945728 Solving -0.3888888889 + m = -1.171945728 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.3888888889' to each side of the equation. -0.3888888889 + 0.3888888889 + m = -1.171945728 + 0.3888888889 Combine like terms: -0.3888888889 + 0.3888888889 = 0.0000000000 0.0000000000 + m = -1.171945728 + 0.3888888889 m = -1.171945728 + 0.3888888889 Combine like terms: -1.171945728 + 0.3888888889 = -0.7830568391 m = -0.7830568391 Simplifying m = -0.7830568391

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.5608346169, -0.7830568391}

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