-8n^2-16n-6=0

Solution for -8n^2-16n-6=0 equation:

Simplifying
-8n2 + -16n + -6 = 0

Reorder the terms:
-6 + -16n + -8n2 = 0

Solving
-6 + -16n + -8n2 = 0

Solving for variable 'n'.

Factor out the Greatest Common Factor (GCF), '-2'.
-2(3 + 8n + 4n2) = 0

Factor a trinomial.
-2((3 + 2n)(1 + 2n)) = 0

Ignore the factor -2.
Subproblem 1
Set the factor '(3 + 2n)' equal to zero and attempt to solve:

Simplifying
3 + 2n = 0

Solving
3 + 2n = 0

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

Add '-3' to each side of the equation.
3 + -3 + 2n = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 2n = 0 + -3
2n = 0 + -3

Combine like terms: 0 + -3 = -3
2n = -3

Divide each side by '2'.
n = -1.5

Simplifying
n = -1.5
Subproblem 2
Set the factor '(1 + 2n)' equal to zero and attempt to solve:

Simplifying
1 + 2n = 0

Solving
1 + 2n = 0

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

Add '-1' to each side of the equation.
1 + -1 + 2n = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 2n = 0 + -1
2n = 0 + -1

Combine like terms: 0 + -1 = -1
2n = -1

Divide each side by '2'.
n = -0.5

Simplifying
n = -0.5
Solution
n = {-1.5, -0.5}