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0=-16t^2+800t-2000000
We move all terms to the left:
0-(-16t^2+800t-2000000)=0
We add all the numbers together, and all the variables
-(-16t^2+800t-2000000)=0
We get rid of parentheses
16t^2-800t+2000000=0
a = 16; b = -800; c = +2000000;
Δ = b2-4ac
Δ = -8002-4·16·2000000
Δ = -127360000
Delta is less than zero, so there is no solution for the equation
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