9=m(3m+1)

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Solution for 9=m(3m+1) equation:


Simplifying
9 = m(3m + 1)

Reorder the terms:
9 = m(1 + 3m)
9 = (1 * m + 3m * m)
9 = (1m + 3m2)

Solving
9 = 1m + 3m2

Solving for variable 'm'.

Reorder the terms:
9 + -1m + -3m2 = 1m + -1m + 3m2 + -3m2

Combine like terms: 1m + -1m = 0
9 + -1m + -3m2 = 0 + 3m2 + -3m2
9 + -1m + -3m2 = 3m2 + -3m2

Combine like terms: 3m2 + -3m2 = 0
9 + -1m + -3m2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-3 + 0.3333333333m + m2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 0.3333333333m + 3 + m2 = 0 + 3

Reorder the terms:
-3 + 3 + 0.3333333333m + m2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 0.3333333333m + m2 = 0 + 3
0.3333333333m + m2 = 0 + 3

Combine like terms: 0 + 3 = 3
0.3333333333m + m2 = 3

The m term is 0.3333333333m.  Take half its coefficient (0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
0.3333333333m + 0.02777777779 + m2 = 3 + 0.02777777779

Reorder the terms:
0.02777777779 + 0.3333333333m + m2 = 3 + 0.02777777779

Combine like terms: 3 + 0.02777777779 = 3.02777777779
0.02777777779 + 0.3333333333m + m2 = 3.02777777779

Factor a perfect square on the left side:
(m + 0.1666666667)(m + 0.1666666667) = 3.02777777779

Calculate the square root of the right side: 1.740051085

Break this problem into two subproblems by setting 
(m + 0.1666666667) equal to 1.740051085 and -1.740051085.

Subproblem 1

m + 0.1666666667 = 1.740051085 Simplifying m + 0.1666666667 = 1.740051085 Reorder the terms: 0.1666666667 + m = 1.740051085 Solving 0.1666666667 + m = 1.740051085 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + m = 1.740051085 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + m = 1.740051085 + -0.1666666667 m = 1.740051085 + -0.1666666667 Combine like terms: 1.740051085 + -0.1666666667 = 1.5733844183 m = 1.5733844183 Simplifying m = 1.5733844183

Subproblem 2

m + 0.1666666667 = -1.740051085 Simplifying m + 0.1666666667 = -1.740051085 Reorder the terms: 0.1666666667 + m = -1.740051085 Solving 0.1666666667 + m = -1.740051085 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + m = -1.740051085 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + m = -1.740051085 + -0.1666666667 m = -1.740051085 + -0.1666666667 Combine like terms: -1.740051085 + -0.1666666667 = -1.9067177517 m = -1.9067177517 Simplifying m = -1.9067177517

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.5733844183, -1.9067177517}

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