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=-2Y^2-4
We move all terms to the left:
-(-2Y^2-4)=0
We get rid of parentheses
2Y^2+4=0
a = 2; b = 0; c = +4;
Δ = b2-4ac
Δ = 02-4·2·4
Δ = -32
Delta is less than zero, so there is no solution for the equation
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