18=-16t^2+30t

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Solution for 18=-16t^2+30t equation: 



18=-16t^2+30t

We move all terms to the left:

18-(-16t^2+30t)=0

We get rid of parentheses

16t^2-30t+18=0

a = 16; b = -30; c = +18;
Δ = b2-4ac
Δ = -302-4·16·18
Δ = -252
Delta is less than zero, so there is no solution for the equation

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