0=13.5-2.5t^2

Solution for 0=13.5-2.5t^2 equation:

Simplifying
0 = 13.5 + -2.5t2

Solving
0 = 13.5 + -2.5t2

Solving for variable 't'.

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

Add '2.5t2' to each side of the equation.
0 + 2.5t2 = 13.5 + -2.5t2 + 2.5t2
Remove the zero:
2.5t2 = 13.5 + -2.5t2 + 2.5t2

Combine like terms: -2.5t2 + 2.5t2 = 0.0
2.5t2 = 13.5 + 0.0
2.5t2 = 13.5

Divide each side by '2.5'.
t2 = 5.4

Simplifying
t2 = 5.4

Take the square root of each side:
t = {-2.323790008, 2.323790008}