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0=19+5.7t+4.9t^2
We move all terms to the left:
0-(19+5.7t+4.9t^2)=0
We add all the numbers together, and all the variables
-(19+5.7t+4.9t^2)=0
We get rid of parentheses
-4.9t^2-5.7t-19=0
a = -4.9; b = -5.7; c = -19;
Δ = b2-4ac
Δ = -5.72-4·(-4.9)·(-19)
Δ = -339.91
Delta is less than zero, so there is no solution for the equation
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