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3=7.6681158t-4.9t^2
We move all terms to the left:
3-(7.6681158t-4.9t^2)=0
We get rid of parentheses
4.9t^2-7.6681158t+3=0
a = 4.9; b = -7.6681158; c = +3;
Δ = b2-4ac
Δ = -7.66811582-4·4.9·3
Δ = -7.7790367925E-8
Delta is less than zero, so there is no solution for the equation
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