56=-9t2

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Solution for 56=-9t2 equation: 



56=-9t^2

We move all terms to the left:

56-(-9t^2)=0

We get rid of parentheses

9t^2+56=0

a = 9; b = 0; c = +56;
Δ = b2-4ac
Δ = 02-4·9·56
Δ = -2016
Delta is less than zero, so there is no solution for the equation

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