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t^2-12t+5=-56
We move all terms to the left:
t^2-12t+5-(-56)=0
We add all the numbers together, and all the variables
t^2-12t+61=0
a = 1; b = -12; c = +61;
Δ = b2-4ac
Δ = -122-4·1·61
Δ = -100
Delta is less than zero, so there is no solution for the equation
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