3(5m-4)m=-2

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Solution for 3(5m-4)m=-2 equation:


Simplifying
3(5m + -4) * m = -2

Reorder the terms:
3(-4 + 5m) * m = -2

Reorder the terms for easier multiplication:
3m(-4 + 5m) = -2
(-4 * 3m + 5m * 3m) = -2
(-12m + 15m2) = -2

Solving
-12m + 15m2 = -2

Solving for variable 'm'.

Reorder the terms:
2 + -12m + 15m2 = -2 + 2

Combine like terms: -2 + 2 = 0
2 + -12m + 15m2 = 0

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

Divide each side by '15'.
0.1333333333 + -0.8m + m2 = 0

Move the constant term to the right:

Add '-0.1333333333' to each side of the equation.
0.1333333333 + -0.8m + -0.1333333333 + m2 = 0 + -0.1333333333

Reorder the terms:
0.1333333333 + -0.1333333333 + -0.8m + m2 = 0 + -0.1333333333

Combine like terms: 0.1333333333 + -0.1333333333 = 0.0000000000
0.0000000000 + -0.8m + m2 = 0 + -0.1333333333
-0.8m + m2 = 0 + -0.1333333333

Combine like terms: 0 + -0.1333333333 = -0.1333333333
-0.8m + m2 = -0.1333333333

The m term is -0.8m.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8m + 0.16 + m2 = -0.1333333333 + 0.16

Reorder the terms:
0.16 + -0.8m + m2 = -0.1333333333 + 0.16

Combine like terms: -0.1333333333 + 0.16 = 0.0266666667
0.16 + -0.8m + m2 = 0.0266666667

Factor a perfect square on the left side:
(m + -0.4)(m + -0.4) = 0.0266666667

Calculate the square root of the right side: 0.163299316

Break this problem into two subproblems by setting 
(m + -0.4) equal to 0.163299316 and -0.163299316.

Subproblem 1

m + -0.4 = 0.163299316 Simplifying m + -0.4 = 0.163299316 Reorder the terms: -0.4 + m = 0.163299316 Solving -0.4 + m = 0.163299316 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + m = 0.163299316 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + m = 0.163299316 + 0.4 m = 0.163299316 + 0.4 Combine like terms: 0.163299316 + 0.4 = 0.563299316 m = 0.563299316 Simplifying m = 0.563299316

Subproblem 2

m + -0.4 = -0.163299316 Simplifying m + -0.4 = -0.163299316 Reorder the terms: -0.4 + m = -0.163299316 Solving -0.4 + m = -0.163299316 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + m = -0.163299316 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + m = -0.163299316 + 0.4 m = -0.163299316 + 0.4 Combine like terms: -0.163299316 + 0.4 = 0.236700684 m = 0.236700684 Simplifying m = 0.236700684

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.563299316, 0.236700684}

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