0=-4.9t^2+19.6

Solution for 0=-4.9t^2+19.6 equation:

Simplifying
0 = -4.9t2 + 19.6

Reorder the terms:
0 = 19.6 + -4.9t2

Solving
0 = 19.6 + -4.9t2

Solving for variable 't'.

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

Add '4.9t2' to each side of the equation.
0 + 4.9t2 = 19.6 + -4.9t2 + 4.9t2
Remove the zero:
4.9t2 = 19.6 + -4.9t2 + 4.9t2

Combine like terms: -4.9t2 + 4.9t2 = 0.0
4.9t2 = 19.6 + 0.0
4.9t2 = 19.6

Divide each side by '4.9'.
t2 = 4

Simplifying
t2 = 4

Take the square root of each side:
t = {-2, 2}