66=-16t^2+15t+30

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Solution for 66=-16t^2+15t+30 equation: 



66=-16t^2+15t+30

We move all terms to the left:

66-(-16t^2+15t+30)=0

We get rid of parentheses

16t^2-15t-30+66=0

We add all the numbers together, and all the variables

16t^2-15t+36=0

a = 16; b = -15; c = +36;
Δ = b2-4ac
Δ = -152-4·16·36
Δ = -2079
Delta is less than zero, so there is no solution for the equation

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