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(t^2-3.2t+23)=0
We get rid of parentheses
t^2-3.2t+23=0
a = 1; b = -3.2; c = +23;
Δ = b2-4ac
Δ = -3.22-4·1·23
Δ = -81.76
Delta is less than zero, so there is no solution for the equation
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