6m(m-4)=m-15

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Solution for 6m(m-4)=m-15 equation:


Simplifying
6m(m + -4) = m + -15

Reorder the terms:
6m(-4 + m) = m + -15
(-4 * 6m + m * 6m) = m + -15
(-24m + 6m2) = m + -15

Reorder the terms:
-24m + 6m2 = -15 + m

Solving
-24m + 6m2 = -15 + m

Solving for variable 'm'.

Reorder the terms:
15 + -24m + -1m + 6m2 = -15 + m + 15 + -1m

Combine like terms: -24m + -1m = -25m
15 + -25m + 6m2 = -15 + m + 15 + -1m

Reorder the terms:
15 + -25m + 6m2 = -15 + 15 + m + -1m

Combine like terms: -15 + 15 = 0
15 + -25m + 6m2 = 0 + m + -1m
15 + -25m + 6m2 = m + -1m

Combine like terms: m + -1m = 0
15 + -25m + 6m2 = 0

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

Divide each side by '6'.
2.5 + -4.166666667m + m2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + -4.166666667m + -2.5 + m2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + -4.166666667m + m2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -4.166666667m + m2 = 0 + -2.5
-4.166666667m + m2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
-4.166666667m + m2 = -2.5

The m term is -4.166666667m.  Take half its coefficient (-2.083333334).
Square it (4.340277781) and add it to both sides.

Add '4.340277781' to each side of the equation.
-4.166666667m + 4.340277781 + m2 = -2.5 + 4.340277781

Reorder the terms:
4.340277781 + -4.166666667m + m2 = -2.5 + 4.340277781

Combine like terms: -2.5 + 4.340277781 = 1.840277781
4.340277781 + -4.166666667m + m2 = 1.840277781

Factor a perfect square on the left side:
(m + -2.083333334)(m + -2.083333334) = 1.840277781

Calculate the square root of the right side: 1.356568384

Break this problem into two subproblems by setting 
(m + -2.083333334) equal to 1.356568384 and -1.356568384.

Subproblem 1

m + -2.083333334 = 1.356568384 Simplifying m + -2.083333334 = 1.356568384 Reorder the terms: -2.083333334 + m = 1.356568384 Solving -2.083333334 + m = 1.356568384 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '2.083333334' to each side of the equation. -2.083333334 + 2.083333334 + m = 1.356568384 + 2.083333334 Combine like terms: -2.083333334 + 2.083333334 = 0.000000000 0.000000000 + m = 1.356568384 + 2.083333334 m = 1.356568384 + 2.083333334 Combine like terms: 1.356568384 + 2.083333334 = 3.439901718 m = 3.439901718 Simplifying m = 3.439901718

Subproblem 2

m + -2.083333334 = -1.356568384 Simplifying m + -2.083333334 = -1.356568384 Reorder the terms: -2.083333334 + m = -1.356568384 Solving -2.083333334 + m = -1.356568384 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '2.083333334' to each side of the equation. -2.083333334 + 2.083333334 + m = -1.356568384 + 2.083333334 Combine like terms: -2.083333334 + 2.083333334 = 0.000000000 0.000000000 + m = -1.356568384 + 2.083333334 m = -1.356568384 + 2.083333334 Combine like terms: -1.356568384 + 2.083333334 = 0.72676495 m = 0.72676495 Simplifying m = 0.72676495

Solution

The solution to the problem is based on the solutions from the subproblems. m = {3.439901718, 0.72676495}

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