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75^3+30t^2+3t=0
We add all the numbers together, and all the variables
30t^2+3t+421875=0
a = 30; b = 3; c = +421875;
Δ = b2-4ac
Δ = 32-4·30·421875
Δ = -50624991
Delta is less than zero, so there is no solution for the equation
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