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3t^2-t+7=4
We move all terms to the left:
3t^2-t+7-(4)=0
We add all the numbers together, and all the variables
3t^2-1t+3=0
a = 3; b = -1; c = +3;
Δ = b2-4ac
Δ = -12-4·3·3
Δ = -35
Delta is less than zero, so there is no solution for the equation
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