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10n^2-8=-12
We move all terms to the left:
10n^2-8-(-12)=0
We add all the numbers together, and all the variables
10n^2+4=0
a = 10; b = 0; c = +4;
Δ = b2-4ac
Δ = 02-4·10·4
Δ = -160
Delta is less than zero, so there is no solution for the equation
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