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=10.5Y^2-4Y+6
We move all terms to the left:
-(10.5Y^2-4Y+6)=0
We get rid of parentheses
-10.5Y^2+4Y-6=0
a = -10.5; b = 4; c = -6;
Δ = b2-4ac
Δ = 42-4·(-10.5)·(-6)
Δ = -236
Delta is less than zero, so there is no solution for the equation
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