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5n^2-3n=-1
We move all terms to the left:
5n^2-3n-(-1)=0
We add all the numbers together, and all the variables
5n^2-3n+1=0
a = 5; b = -3; c = +1;
Δ = b2-4ac
Δ = -32-4·5·1
Δ = -11
Delta is less than zero, so there is no solution for the equation
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