-104=-4n(-6-5n)

Solution for -104=-4n(-6-5n) equation:

Simplifying
-104 = -4n(-6 + -5n)
-104 = (-6 * -4n + -5n * -4n)
-104 = (24n + 20n2)

Solving
-104 = 24n + 20n2

Solving for variable 'n'.

Reorder the terms:
-104 + -24n + -20n2 = 24n + -24n + 20n2 + -20n2

Combine like terms: 24n + -24n = 0
-104 + -24n + -20n2 = 0 + 20n2 + -20n2
-104 + -24n + -20n2 = 20n2 + -20n2

Combine like terms: 20n2 + -20n2 = 0
-104 + -24n + -20n2 = 0

Factor out the Greatest Common Factor (GCF), '-4'.
-4(26 + 6n + 5n2) = 0

Ignore the factor -4.
Subproblem 1
Set the factor '(26 + 6n + 5n2)' equal to zero and attempt to solve:

Simplifying
26 + 6n + 5n2 = 0

Solving
26 + 6n + 5n2 = 0

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

Divide each side by '5'.
5.2 + 1.2n + n2 = 0

Move the constant term to the right:

Add '-5.2' to each side of the equation.
5.2 + 1.2n + -5.2 + n2 = 0 + -5.2

Reorder the terms:
5.2 + -5.2 + 1.2n + n2 = 0 + -5.2

Combine like terms: 5.2 + -5.2 = 0.0
0.0 + 1.2n + n2 = 0 + -5.2
1.2n + n2 = 0 + -5.2

Combine like terms: 0 + -5.2 = -5.2
1.2n + n2 = -5.2

The n term is 1.2n.  Take half its coefficient (0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
1.2n + 0.36 + n2 = -5.2 + 0.36

Reorder the terms:
0.36 + 1.2n + n2 = -5.2 + 0.36

Combine like terms: -5.2 + 0.36 = -4.84
0.36 + 1.2n + n2 = -4.84

Factor a perfect square on the left side:
(n + 0.6)(n + 0.6) = -4.84

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.