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0=4.9t^2+4t+8
We move all terms to the left:
0-(4.9t^2+4t+8)=0
We add all the numbers together, and all the variables
-(4.9t^2+4t+8)=0
We get rid of parentheses
-4.9t^2-4t-8=0
a = -4.9; b = -4; c = -8;
Δ = b2-4ac
Δ = -42-4·(-4.9)·(-8)
Δ = -140.8
Delta is less than zero, so there is no solution for the equation
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