2m(m-5)=-4

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


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

Reorder the terms:
2m(-5 + m) = -4
(-5 * 2m + m * 2m) = -4
(-10m + 2m2) = -4

Solving
-10m + 2m2 = -4

Solving for variable 'm'.

Reorder the terms:
4 + -10m + 2m2 = -4 + 4

Combine like terms: -4 + 4 = 0
4 + -10m + 2m2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(2 + -5m + m2) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(2 + -5m + m2)' equal to zero and attempt to solve:

Simplifying
2 + -5m + m2 = 0

Solving
2 + -5m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -5m + -2 + m2 = 0 + -2

Reorder the terms:
2 + -2 + -5m + m2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -5m + m2 = 0 + -2
-5m + m2 = 0 + -2

Combine like terms: 0 + -2 = -2
-5m + m2 = -2

The m term is -5m.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5m + 6.25 + m2 = -2 + 6.25

Reorder the terms:
6.25 + -5m + m2 = -2 + 6.25

Combine like terms: -2 + 6.25 = 4.25
6.25 + -5m + m2 = 4.25

Factor a perfect square on the left side:
(m + -2.5)(m + -2.5) = 4.25

Calculate the square root of the right side: 2.061552813

Break this problem into two subproblems by setting 
(m + -2.5) equal to 2.061552813 and -2.061552813.


Subproblem 1
m + -2.5 = 2.061552813

Simplifying
m + -2.5 = 2.061552813

Reorder the terms:
-2.5 + m = 2.061552813

Solving
-2.5 + m = 2.061552813

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '2.5' to each side of the equation.
-2.5 + 2.5 + m = 2.061552813 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + m = 2.061552813 + 2.5
m = 2.061552813 + 2.5

Combine like terms: 2.061552813 + 2.5 = 4.561552813
m = 4.561552813

Simplifying
m = 4.561552813


Subproblem 2
m + -2.5 = -2.061552813

Simplifying
m + -2.5 = -2.061552813

Reorder the terms:
-2.5 + m = -2.061552813

Solving
-2.5 + m = -2.061552813

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '2.5' to each side of the equation.
-2.5 + 2.5 + m = -2.061552813 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + m = -2.061552813 + 2.5
m = -2.061552813 + 2.5

Combine like terms: -2.061552813 + 2.5 = 0.438447187
m = 0.438447187

Simplifying
m = 0.438447187


Solution
The solution to the problem is based on the solutions
from the subproblems.
m = {4.561552813, 0.438447187}
Solution
m = {4.561552813, 0.438447187}

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