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50=0+40t-16t^2
We move all terms to the left:
50-(0+40t-16t^2)=0
We get rid of parentheses
16t^2-40t-0+50=0
We add all the numbers together, and all the variables
16t^2-40t+50=0
a = 16; b = -40; c = +50;
Δ = b2-4ac
Δ = -402-4·16·50
Δ = -1600
Delta is less than zero, so there is no solution for the equation
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