7t2+28t+56=0

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Solution for 7t2+28t+56=0 equation: 



7t^2+28t+56=0

a = 7; b = 28; c = +56;
Δ = b2-4ac
Δ = 282-4·7·56
Δ = -784
Delta is less than zero, so there is no solution for the equation

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