4.9t^2-45=0

Solution for 4.9t^2-45=0 equation:

Simplifying
4.9t2 + -45 = 0

Reorder the terms:
-45 + 4.9t2 = 0

Solving
-45 + 4.9t2 = 0

Solving for variable 't'.

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

Add '45' to each side of the equation.
-45 + 45 + 4.9t2 = 0 + 45

Combine like terms: -45 + 45 = 0
0 + 4.9t2 = 0 + 45
4.9t2 = 0 + 45

Combine like terms: 0 + 45 = 45
4.9t2 = 45

Divide each side by '4.9'.
t2 = 9.183673469

Simplifying
t2 = 9.183673469

Take the square root of each side:
t = {-3.030457634, 3.030457634}