3=11n-12n^2

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Solution for 3=11n-12n^2 equation: 



3=11n-12n^2

We move all terms to the left:

3-(11n-12n^2)=0

We get rid of parentheses

12n^2-11n+3=0

a = 12; b = -11; c = +3;
Δ = b2-4ac
Δ = -112-4·12·3
Δ = -23
Delta is less than zero, so there is no solution for the equation

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