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3d^2-1=-5
We move all terms to the left:
3d^2-1-(-5)=0
We add all the numbers together, and all the variables
3d^2+4=0
a = 3; b = 0; c = +4;
Δ = b2-4ac
Δ = 02-4·3·4
Δ = -48
Delta is less than zero, so there is no solution for the equation
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