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5n^2+4=-2n
We move all terms to the left:
5n^2+4-(-2n)=0
We get rid of parentheses
5n^2+2n+4=0
a = 5; b = 2; c = +4;
Δ = b2-4ac
Δ = 22-4·5·4
Δ = -76
Delta is less than zero, so there is no solution for the equation
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