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6t^2=-18
We move all terms to the left:
6t^2-(-18)=0
We add all the numbers together, and all the variables
6t^2+18=0
a = 6; b = 0; c = +18;
Δ = b2-4ac
Δ = 02-4·6·18
Δ = -432
Delta is less than zero, so there is no solution for the equation
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