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n^2=3n-4=0
We move all terms to the left:
n^2-(3n-4)=0
We get rid of parentheses
n^2-3n+4=0
a = 1; b = -3; c = +4;
Δ = b2-4ac
Δ = -32-4·1·4
Δ = -7
Delta is less than zero, so there is no solution for the equation
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