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=0.1Y^2-2Y+12
We move all terms to the left:
-(0.1Y^2-2Y+12)=0
We get rid of parentheses
-0.1Y^2+2Y-12=0
a = -0.1; b = 2; c = -12;
Δ = b2-4ac
Δ = 22-4·(-0.1)·(-12)
Δ = -0.8
Delta is less than zero, so there is no solution for the equation
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