3m+5m(6-m)=4

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Solution for 3m+5m(6-m)=4 equation:


Simplifying
3m + 5m(6 + -1m) = 4
3m + (6 * 5m + -1m * 5m) = 4
3m + (30m + -5m2) = 4

Combine like terms: 3m + 30m = 33m
33m + -5m2 = 4

Solving
33m + -5m2 = 4

Solving for variable 'm'.

Reorder the terms:
-4 + 33m + -5m2 = 4 + -4

Combine like terms: 4 + -4 = 0
-4 + 33m + -5m2 = 0

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
0.8 + -6.6m + m2 = 0

Move the constant term to the right:

Add '-0.8' to each side of the equation.
0.8 + -6.6m + -0.8 + m2 = 0 + -0.8

Reorder the terms:
0.8 + -0.8 + -6.6m + m2 = 0 + -0.8

Combine like terms: 0.8 + -0.8 = 0.0
0.0 + -6.6m + m2 = 0 + -0.8
-6.6m + m2 = 0 + -0.8

Combine like terms: 0 + -0.8 = -0.8
-6.6m + m2 = -0.8

The m term is -6.6m.  Take half its coefficient (-3.3).
Square it (10.89) and add it to both sides.

Add '10.89' to each side of the equation.
-6.6m + 10.89 + m2 = -0.8 + 10.89

Reorder the terms:
10.89 + -6.6m + m2 = -0.8 + 10.89

Combine like terms: -0.8 + 10.89 = 10.09
10.89 + -6.6m + m2 = 10.09

Factor a perfect square on the left side:
(m + -3.3)(m + -3.3) = 10.09

Calculate the square root of the right side: 3.176476035

Break this problem into two subproblems by setting 
(m + -3.3) equal to 3.176476035 and -3.176476035.

Subproblem 1

m + -3.3 = 3.176476035 Simplifying m + -3.3 = 3.176476035 Reorder the terms: -3.3 + m = 3.176476035 Solving -3.3 + m = 3.176476035 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '3.3' to each side of the equation. -3.3 + 3.3 + m = 3.176476035 + 3.3 Combine like terms: -3.3 + 3.3 = 0.0 0.0 + m = 3.176476035 + 3.3 m = 3.176476035 + 3.3 Combine like terms: 3.176476035 + 3.3 = 6.476476035 m = 6.476476035 Simplifying m = 6.476476035

Subproblem 2

m + -3.3 = -3.176476035 Simplifying m + -3.3 = -3.176476035 Reorder the terms: -3.3 + m = -3.176476035 Solving -3.3 + m = -3.176476035 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '3.3' to each side of the equation. -3.3 + 3.3 + m = -3.176476035 + 3.3 Combine like terms: -3.3 + 3.3 = 0.0 0.0 + m = -3.176476035 + 3.3 m = -3.176476035 + 3.3 Combine like terms: -3.176476035 + 3.3 = 0.123523965 m = 0.123523965 Simplifying m = 0.123523965

Solution

The solution to the problem is based on the solutions from the subproblems. m = {6.476476035, 0.123523965}

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