1200=-1.4t-4.9t^2

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Solution for 1200=-1.4t-4.9t^2 equation: 



1200=-1.4t-4.9t^2

We move all terms to the left:

1200-(-1.4t-4.9t^2)=0

We get rid of parentheses

4.9t^2+1.4t+1200=0

a = 4.9; b = 1.4; c = +1200;
Δ = b2-4ac
Δ = 1.42-4·4.9·1200
Δ = -23518.04
Delta is less than zero, so there is no solution for the equation

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