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-4y^2+y=4
We move all terms to the left:
-4y^2+y-(4)=0
a = -4; b = 1; c = -4;
Δ = b2-4ac
Δ = 12-4·(-4)·(-4)
Δ = -63
Delta is less than zero, so there is no solution for the equation
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