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50=18t-4.8t^2
We move all terms to the left:
50-(18t-4.8t^2)=0
We get rid of parentheses
4.8t^2-18t+50=0
a = 4.8; b = -18; c = +50;
Δ = b2-4ac
Δ = -182-4·4.8·50
Δ = -636
Delta is less than zero, so there is no solution for the equation
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