80=-16t^2+72t

Solution for 80=-16t^2+72t equation:

Simplifying
80 = -16t2 + 72t

Reorder the terms:
80 = 72t + -16t2

Solving
80 = 72t + -16t2

Solving for variable 't'.

Reorder the terms:
80 + -72t + 16t2 = 72t + -72t + -16t2 + 16t2

Combine like terms: 72t + -72t = 0
80 + -72t + 16t2 = 0 + -16t2 + 16t2
80 + -72t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
80 + -72t + 16t2 = 0

Factor out the Greatest Common Factor (GCF), '8'.
8(10 + -9t + 2t2) = 0

Factor a trinomial.
8((2 + -1t)(5 + -2t)) = 0

Ignore the factor 8.
Subproblem 1
Set the factor '(2 + -1t)' equal to zero and attempt to solve:

Simplifying
2 + -1t = 0

Solving
2 + -1t = 0

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

Add '-2' to each side of the equation.
2 + -2 + -1t = 0 + -2

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

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

Divide each side by '-1'.
t = 2

Simplifying
t = 2
Subproblem 2
Set the factor '(5 + -2t)' equal to zero and attempt to solve:

Simplifying
5 + -2t = 0

Solving
5 + -2t = 0

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

Add '-5' to each side of the equation.
5 + -5 + -2t = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -2t = 0 + -5
-2t = 0 + -5

Combine like terms: 0 + -5 = -5
-2t = -5

Divide each side by '-2'.
t = 2.5

Simplifying
t = 2.5
Solution
t = {2, 2.5}