4.9t^2+2.5t+1=0

Solution for 4.9t^2+2.5t+1=0 equation:

Simplifying
4.9t2 + 2.5t + 1 = 0

Reorder the terms:
1 + 2.5t + 4.9t2 = 0

Solving
1 + 2.5t + 4.9t2 = 0

Solving for variable 't'.

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

Divide each side by '4.9'.
0.2040816327 + 0.5102040816t + t2 = 0

Move the constant term to the right:

Add '-0.2040816327' to each side of the equation.
0.2040816327 + 0.5102040816t + -0.2040816327 + t2 = 0 + -0.2040816327

Reorder the terms:
0.2040816327 + -0.2040816327 + 0.5102040816t + t2 = 0 + -0.2040816327

Combine like terms: 0.2040816327 + -0.2040816327 = 0.0000000000
0.0000000000 + 0.5102040816t + t2 = 0 + -0.2040816327
0.5102040816t + t2 = 0 + -0.2040816327

Combine like terms: 0 + -0.2040816327 = -0.2040816327
0.5102040816t + t2 = -0.2040816327

The t term is 0.5102040816t.  Take half its coefficient (0.2551020408).
Square it (0.06507705122) and add it to both sides.

Add '0.06507705122' to each side of the equation.
0.5102040816t + 0.06507705122 + t2 = -0.2040816327 + 0.06507705122

Reorder the terms:
0.06507705122 + 0.5102040816t + t2 = -0.2040816327 + 0.06507705122

Combine like terms: -0.2040816327 + 0.06507705122 = -0.13900458148
0.06507705122 + 0.5102040816t + t2 = -0.13900458148

Factor a perfect square on the left side:
(t + 0.2551020408)(t + 0.2551020408) = -0.13900458148

Can't calculate square root of the right side.

The solution to this equation could not be determined.