6m+2m(m+7)=m-14

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Solution for 6m+2m(m+7)=m-14 equation:


Simplifying
6m + 2m(m + 7) = m + -14

Reorder the terms:
6m + 2m(7 + m) = m + -14
6m + (7 * 2m + m * 2m) = m + -14
6m + (14m + 2m2) = m + -14

Combine like terms: 6m + 14m = 20m
20m + 2m2 = m + -14

Reorder the terms:
20m + 2m2 = -14 + m

Solving
20m + 2m2 = -14 + m

Solving for variable 'm'.

Reorder the terms:
14 + 20m + -1m + 2m2 = -14 + m + 14 + -1m

Combine like terms: 20m + -1m = 19m
14 + 19m + 2m2 = -14 + m + 14 + -1m

Reorder the terms:
14 + 19m + 2m2 = -14 + 14 + m + -1m

Combine like terms: -14 + 14 = 0
14 + 19m + 2m2 = 0 + m + -1m
14 + 19m + 2m2 = m + -1m

Combine like terms: m + -1m = 0
14 + 19m + 2m2 = 0

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

Divide each side by '2'.
7 + 9.5m + m2 = 0

Move the constant term to the right:

Add '-7' to each side of the equation.
7 + 9.5m + -7 + m2 = 0 + -7

Reorder the terms:
7 + -7 + 9.5m + m2 = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 9.5m + m2 = 0 + -7
9.5m + m2 = 0 + -7

Combine like terms: 0 + -7 = -7
9.5m + m2 = -7

The m term is 9.5m.  Take half its coefficient (4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
9.5m + 22.5625 + m2 = -7 + 22.5625

Reorder the terms:
22.5625 + 9.5m + m2 = -7 + 22.5625

Combine like terms: -7 + 22.5625 = 15.5625
22.5625 + 9.5m + m2 = 15.5625

Factor a perfect square on the left side:
(m + 4.75)(m + 4.75) = 15.5625

Calculate the square root of the right side: 3.94493346

Break this problem into two subproblems by setting 
(m + 4.75) equal to 3.94493346 and -3.94493346.

Subproblem 1

m + 4.75 = 3.94493346 Simplifying m + 4.75 = 3.94493346 Reorder the terms: 4.75 + m = 3.94493346 Solving 4.75 + m = 3.94493346 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + m = 3.94493346 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + m = 3.94493346 + -4.75 m = 3.94493346 + -4.75 Combine like terms: 3.94493346 + -4.75 = -0.80506654 m = -0.80506654 Simplifying m = -0.80506654

Subproblem 2

m + 4.75 = -3.94493346 Simplifying m + 4.75 = -3.94493346 Reorder the terms: 4.75 + m = -3.94493346 Solving 4.75 + m = -3.94493346 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + m = -3.94493346 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + m = -3.94493346 + -4.75 m = -3.94493346 + -4.75 Combine like terms: -3.94493346 + -4.75 = -8.69493346 m = -8.69493346 Simplifying m = -8.69493346

Solution

The solution to the problem is based on the solutions from the subproblems. m = {-0.80506654, -8.69493346}

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