0=164-12t-16t^2

Solution for 0=164-12t-16t^2 equation:

Simplifying
0 = 164 + -12t + -16t2

Solving
0 = 164 + -12t + -16t2

Solving for variable 't'.

Combine like terms: 0 + -164 = -164
-164 + 12t + 16t2 = 164 + -12t + -16t2 + -164 + 12t + 16t2

Reorder the terms:
-164 + 12t + 16t2 = 164 + -164 + -12t + 12t + -16t2 + 16t2

Combine like terms: 164 + -164 = 0
-164 + 12t + 16t2 = 0 + -12t + 12t + -16t2 + 16t2
-164 + 12t + 16t2 = -12t + 12t + -16t2 + 16t2

Combine like terms: -12t + 12t = 0
-164 + 12t + 16t2 = 0 + -16t2 + 16t2
-164 + 12t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
-164 + 12t + 16t2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-41 + 3t + 4t2) = 0

Ignore the factor 4.
Subproblem 1
Set the factor '(-41 + 3t + 4t2)' equal to zero and attempt to solve:

Simplifying
-41 + 3t + 4t2 = 0

Solving
-41 + 3t + 4t2 = 0

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

Divide each side by '4'.
-10.25 + 0.75t + t2 = 0

Move the constant term to the right:

Add '10.25' to each side of the equation.
-10.25 + 0.75t + 10.25 + t2 = 0 + 10.25

Reorder the terms:
-10.25 + 10.25 + 0.75t + t2 = 0 + 10.25

Combine like terms: -10.25 + 10.25 = 0.00
0.00 + 0.75t + t2 = 0 + 10.25
0.75t + t2 = 0 + 10.25

Combine like terms: 0 + 10.25 = 10.25
0.75t + t2 = 10.25

The t term is 0.75t.  Take half its coefficient (0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
0.75t + 0.140625 + t2 = 10.25 + 0.140625

Reorder the terms:
0.140625 + 0.75t + t2 = 10.25 + 0.140625

Combine like terms: 10.25 + 0.140625 = 10.390625
0.140625 + 0.75t + t2 = 10.390625

Factor a perfect square on the left side:
(t + 0.375)(t + 0.375) = 10.390625

Calculate the square root of the right side: 3.22344924

Break this problem into two subproblems by setting 
(t + 0.375) equal to 3.22344924 and -3.22344924.

Subproblem 1
t + 0.375 = 3.22344924

Simplifying
t + 0.375 = 3.22344924

Reorder the terms:
0.375 + t = 3.22344924

Solving
0.375 + t = 3.22344924

Solving for variable 't'.

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

Add '-0.375' to each side of the equation.
0.375 + -0.375 + t = 3.22344924 + -0.375

Combine like terms: 0.375 + -0.375 = 0.000
0.000 + t = 3.22344924 + -0.375
t = 3.22344924 + -0.375

Combine like terms: 3.22344924 + -0.375 = 2.84844924
t = 2.84844924

Simplifying
t = 2.84844924

Subproblem 2
t + 0.375 = -3.22344924

Simplifying
t + 0.375 = -3.22344924

Reorder the terms:
0.375 + t = -3.22344924

Solving
0.375 + t = -3.22344924

Solving for variable 't'.

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

Add '-0.375' to each side of the equation.
0.375 + -0.375 + t = -3.22344924 + -0.375

Combine like terms: 0.375 + -0.375 = 0.000
0.000 + t = -3.22344924 + -0.375
t = -3.22344924 + -0.375

Combine like terms: -3.22344924 + -0.375 = -3.59844924
t = -3.59844924

Simplifying
t = -3.59844924

Solution
The solution to the problem is based on the solutions
from the subproblems.
t = {2.84844924, -3.59844924}
Solution
t = {2.84844924, -3.59844924}